Fairly respectable lists with some really good games, but I still feel like the rest of the major gaming platforms (360, PS3, and PC) have all of the truly important must-play titles. Wii games simply cannot compare to the likes of Assassins Creed, Mass Effect, Borderlands, Modern Warfare 2 etc... Some Wii titles are a lot of fun (typically the first-party games) but other systems are leagues and bounds ahead of them in depth and particularly online gameplay. Also it always makes me sad to see PS2 and Gamecube games included on "must have Wii games" lists.

Nice list but I'm with Godwind on wanting the Grinder to be removed, to me it looks like a poor man's left 4 dead. 

Updated the OP with Xenoblade and The Last Story.
 
I removed The Grinder by popular demand. :)
 
But I added Gladiator A.D. in return.

" Updated the OP with Xenoblade and The Last Story.
 
I removed The Grinder by popular demand. :)
 
But I added Gladiator A.D. in return. "

Added Sonic 4 and De Blob 2.

Xenoblade and Tales of Graces need to be higher, Red Steel 2 needs to be much lower, plus Fragile and Tournament of Legends need to be removed.

" Xenoblade and Tales of Graces need to be higher, Red Steel 2 needs to be much lowe

Added Trauma Team.

Can someone help me out? I'm starting to like my Wii, and I want a game that will make me like it more. I have played Super Mario Galaxy, Twilight Princess, Super Paper Mario, Mario Kart Wii, No More Heroes, No More Heroes 2, Super Smash Bros Brawl... and I think that's it. Oh, and I have Mega Man 9 and a bunch of VC games. 
 
I would get the Metroid Trilogy game, but I've never played a Metroid Prime and I don't know if it's for me. And, didn't they stop making it? 
 
I'm open to anything, even WiiWare stuff.

@TheJollyRajah: The one thing you need to know about Metroid Prime is that it is not an FPS game, but a First-Person action adventure. It is like the other Metroid games, only in first-person. Have you played Castlevania? Shadow Complex? It is like that. You have to tolerate respawning enemies in areas you have already visited. This is what kills these games for me, but for many people it doesn't. 
 
What are your preferences? The only game you can recommend without thinking twice and without knowing the other one's game preferences is Wii Sports Resort. 
 
Wiiware has a couple of demos, by the way.
 
@ScrappyDoo:  Every once in a while, a game comes along that does videogame storytelling right - That doesn't rely on movies and bad script but instead chooses to involve the player in the telling of the story, world and characters. There was Silent Hill 2, then there was Shadow of the Colossus, then there were HL2 and Portal, and now there is Shattered Memories.
As I said before in this thread, in my book it is one of the best games of the last 10 years - that alone would not justify this position, but since it got "best Wii game" and "best ending" on Giantbomb, I feel comfortable leaving it there.

I'd recommend Trauma Centre New Blood (why isn't it up there with the original?) as well as NHL 2k10 and Tiger Woods 10 for sports games.

Added a bunch of upcoming Wiiware games: Megaman 10, Toribash, Trackmania Wii, Ghostslayer and Super Meat Boy.
 
The consummate Wii games list now includes over 100 games.
 
I will ask again for this thread to get anchored instead of my other, outdated one in hopes of some mod reading this. 

Trackmania Wii isn't a WiiWare release, it's a full retail title. But good job :)

Oh. I will change that with the next update.

" Can someone help me out? I'm starting to like my Wii, and I want a game that will make me like it more. I have played Super Mario Galaxy, Twilight Princess, Super Paper Mario, Mario Kart Wii, No More Heroes, No More Heroes 2, Super Smash Bros Brawl... and I think that's it. Oh, and I have Mega Man 9 and a bunch of VC games.  I would get the Metroid Trilogy game, but I've never played a Metroid Prime and I don't know if it's for me. And, didn't they stop making it?  I'm open to anything, even WiiWare stuff. "

I demand you move Resident Evil 4 to the must have list. 
 
J/K but it is one of my top 10 all time favorite games.

Changed Trackmania from Wiiware to retail
Added Tenchu, Blast Works, Cave Story, La Mulana, Toki Tori, MaBoShi, LIT, Contra Rebirth and Phoenix Wright. 

I would to nominate MLB Power Pros. to the Fan Favorites list. It's a much deeper baseball game than the cover suggests. It's gameplay is reminiscent to the old RBI baseball games, which is quite good, and they have plenty of modes to keep you busy. It has a RPGish mode where you become a college kid trying to make the majors and you can control your character in the baseball games when he plays. There is also an MLB season mode that is done like the franchise modes in MLB 2K and The Show. Overall, the game was very well done and I'm disappointed that 2K didn't publish it for 2010. It seems that the game was too niche to sustain itself for long. I recommend this game to baseball fans though. It's on par with The Show.

Metacritic and user scores agree with you. Will add it with the next update, thanks.

Disney's Epic Mickey is always a must-have game.

Added MLB Power Pros to fan favorites
Removed GhostSlayer (has been released; I like it very much, but it clearly isn't what you'd call a good game)
 
Added FlingSmash and Prince of Persia: The Forgotten Sands

" Mario Kart Wii and Twilight Princess are must-haves, but Resident Evil 4, Okami and Zack & Wiki aren't? Really? "

I would recommend swapping Dead Space Extraction and Resident Evil 4. I'd never touched RE4 before playing through it on the Wii, and I had such a good time with it that I'm probably going to buy the Gold Edition of RE5 when it comes out on the 360.  The only real knock against it is that it's been out on other platforms, but that seems highly irrelevant to me when we're talking about game recommendations.

Added Sonic & Sega All-Stars Racing to 2nd-tier-awesomeness, because apparently, that game is pretty great. Can anyone confirm this? I haven't yet played it myself.
 

I know I'm reviving an old thread here but I just needed an excuse to add these games to the list:
 
 
 

Monster Hunter Tri. Must Have. Now.

Now that....is a list.

 @Meowayne:
 
 
No More Heroes 2: Desperate Struggle should definitely be on the top tier list also. 
 
Mega Man 10 WiiWare 

I know, this needs to be updated. I am fine with the updating part, I am just too lazy to collect everything that has changed since the last update.
 
Someone write me  a list, so I can update... the list. D:

I'll think about what games need to be added, I tried earlier but then remembered I had just woken up.

I don't think NMH2 should be top tier.  It's very lackluster in comparison to the original.  Same with Mega Man 10.

When is this badboy being updated?

I was kinda hoping for Linky to make that update list he talked about above. Guess that's not going to happen now, eh. 
 
Hm. I'm sure I'll update it during/after E3.

This thread has now been updated.

• SMG2
• Red Steel 2
• Sin & Punishment 2
• Monster Hunter Tri

• Trauma Team

• Fragile Dreams
• Prince of Persia

• Mega Man 10
• Cave Story

• Rage of the Gladiator
• Bit.Trip Runner
• Art of Balance

• Donkey Kong Country Reloaded
•  Kirby: Epic Yarn
• Wii Party
• Mario Sports Mix
• Call of Duty: Black Ops
• Shaun White Skateboarding
• Pikmin 3
• Goldeneye 007
• Raving Rabbids Travel in Time
• Need for Speed: Hot Pursuit
• Michael Jackson
• Conduit 2
• The Sims 3
• Flip's Twisted World
• Sonic Colors
• Driver: San Francisco
• Tom Clancy's Ghost Recon: Future Soldier

You should throw in NiGHTS: Journey of Dreams into fan favorites.

Other M needs to be moved from upcoming to current must haves.

Excellent thread! Buying a Wii this wednesday and had no idea where to start looking for good games.

I'd argue that MadWorld should be a must have. Granted, it's not for everybody, but that game deserves some more respect.

Kirby's Epic Yarn and Disney's Guilty Party are clearly 2 of the best games the Wii has to offer. Even if they have specific applications.

Updated the OP 11/06/10.
 
Yeah, seriously.

Might check out de blob pretty soon!

This thread reminded me that I was supposed to get Kolona. 
Also wish Cave Story could come out here

Sooo..... Where should I put Black Ops?

Added (and removed ;_; ) plenty of titles. The list now contains over 100 games.  
 
Myself, I am completely taken by surprise at Donkey Kong Country Returns at the moment. Brilliant platformer. 

The GameCube version of RE4 is WAY better.

" The GameCube version of RE4 is WAY better. "

The Wii HAS Game! Great list!