what should i purchase?

i have a $10 gift certificate to gamestop and i dont know what to buy. ill put in up to maybe $5 in addition to the gift certificate. what should i get?

Keep it, dont spend it now you've got this far. Fable 2 is coming out later this month! Also in the next 2 months a line up of amazing games is coming out, forget playing some crapy old games- get these!

Please use the stickied recommendation thread. Thanks. Although saving up the money sounds like a good idea considering what's on the horizon.