What Should I Buy?

[triggrhappy94]

So, I have a buy two get one free coupon for Gamestop (I know, its a racket, but I could use new games). The only problem is that I don't know what to buy.(It has to be 360 games)
I was thinking I'd get Dead Rising 2, and KOTOR2 but that's all I can come up with.
Any suggestions?

EDIT:
I avoided making a list of the games I already have because I have a pretty good collection.
I have all the major titles since the 360's launch. So don't worry about Mass Effect, Fallout, Halo, Call of Duty, or Assassin's Creed.

 

[Souplex]

Suggesting games becomes easier when we know what you already have. That way not only do we not waste time talking aboot stuff you already have, but we get a better sense of what you like.

 

[swankyfella]

KOTOR 2 is an original Xbox game. It is, however, excellent.

I would recommend waiting a few days for Portal 2. Dead Rising 2 is a strong choice, too. And you can't go wrong with Mass Effect 2.

 

[New Troll]

Lego Harry Potter Years 1-4 + Lego Batman = Lego Rock Band (for free)

 

[triggrhappy94]

Buy 'You Don't Know Jack'.

What is that game about? I've seen it around, and I've been corious.