So, I think I'm ready to spend my 2400 points, I've already got all the ME2 and Fable II DLC. I own a ps3 so most multiplats I buy it on that. I'm looking for something with no online critical part, as I'm not buying xbox live gold. So I'm thinking Shadow Complex and Dead Rising 2: Case Zero. But I've got 800 points missing on that, Super Meat Boy looks interesting, but i don't feel like stressing out over that game, anything else worth 800 or 1200 points?

Buy a bunch of Game room stuff. According to the Giant bomb staff that is well worth your money.

Limbo is supposed to be pretty good and it is XBLA exclusive at this time. It is 1200 points, but it seems to be worth it if single player, high concept games are your thing. I think I will get it as my last purchase to complete the 2400 points.

Limbo! Such an amazing game. I'm still playing it from time to time, just to experience it again.

Buy Limbo if you haven't yet.
 
Btw, this campaign is brilliant of Microsoft. I wonder how much sales increased because of this.

The Maw, Super Meat Boy, Limbo, Splosion man, Comic Jumper

Take your pick. 

Metal Slug 3, Castlevania: Symphony of the Night and Ikaruga are all fantastic games, and cost 800 points.

I think Limbo is too short, but maybe I'll get the maw or comic Jumper

The new Tomb Raider game is pretty good fun.

Super meat boy and Red dead DLC.

Super Meat Boy, Limbo, Costume Quest, UNO, Bomberman Live.

I bought dead rising: case zero, limbo and super meat boy to rack up my 2400 points. All three are great games and I recommend them if you're trying to spend the points.

Risk Factions and Trials HD

Super Meat Boy and Shadow Complex

I was mulling over Undead Nightmare, Super Meat Boy, and the ME2 DLC.