A friend thinking of getting a 360 or PS3, which one and what games?

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Talk to her about Buzz.

http://ps3.ign.com/objects/958/958423.html
http://ps3.ign.com/objects/143/14354806.html

I'm sure she would love the games. And she would enjoy it a lot with friends too (even those who are not into games).
One of my favorite franchise on PS3.