So tomorrow I'm buying a Wii second hand from a dude. One controller, motionplus, and four games that honestly don't interest me that much (I think they were Wii Sports, Wii Sports Resort, EA Sports Active, and Grand Slam Tennis). So with those pathetic titles I'm now obviously looking to expand my library, so here's a list of planned purchases.
 
A Boy and His Blob
de Blob
Little King's Story
No More Heroes
No More Heroes 2: Desperate Struggle 
Okami 
Resident Evil 4 (Wii Edition)
Super Mario Galaxy
Super Mario Galaxy 2
Super Paper Mario
Silent Hill: Shattered Memories 
Tales of Symphonia: Dawn of the New World
Zack & Wiki: Quest For Barbaros' Treasure
Zelda: Twilight Princess
 
So with those games in mind, any game you think I should take a look at as well? Epic Mickey and Kirby's Epic Yarn both look really good as well. To my delight I heard that I can also play GameCube games on the Wii if I get a controller and memorycard (and actually find those games...), which means I could play more awesome classics like Wind Waker and Paper Mario: Thousand Year Door! So while I'm on that topic, any classic RPG/Adventure GameCube games I should try and find as well?
 
Cheerio

All four games that you get with it are actually really, really good and you should give them a try. Especially(!) Wii Sports Resort.

Metroid Other M! 
Monster Hunter Tri!
 
And for the NGC you can't go wrong with RPG's like Tales of Symphonia, Baten Kaitos, Skies of Arcadia Legends, Lost Kingdoms 1&2 or The Lord of the Rings The Third Age (last is a personal favorite, many seem to dislike it :/ )

Tatsunoko maybe?

That is a great list of games. I'm getting Muramasa in the mail tomorrow and it is supposed to be really good. You might want to check it out.

Cheers for all the feedback folks! 
 
@TaliciaDragonsong: 
Isn't Monster Hunter Tri mostly focused on online play?

I bought a Wii a couple months ago along with about the top ten games that I thought would interest me. While the games weren't bad, and in fact some were great, I don't think I've touched my Wii in a while...

 Paper Mario: Thousand Year Door!

• Metroid:  Other M
• Metroid Prime Trilogy
• Fire Emblem:  Path of Radiance (GameCube)
• Fire Emblem:  Radiant Dawn
• Trauma Team
• Sin & Punishment:  Star Successor
• Tatsunoko vs. Capcom

Oh my, thanks again for the recommendations!