If you had to play a game with a friend...what game would it be?

Ya!Hi Guys!
It was about time i came from the dead!
All right now...this is just another poll,This time,its pretty simple.
If you had to play a game with someone...what game would it be?
If you have anything else on mind related to the poll,feel free to post it!
All right now excuse-me...going to pwn my friend on Bleach *BANKAI* *TENSA ZANGETSU*
My Friend : *Stares* *Gets Cut in 1 million pieces.*
Winner!!! 8)

I''ll play whatever I can own my friends in. :)

A Co-Op shooter.

Anything goes, with one problem: i don't have any gamer friend :(

chip and dale: rescue rangersthat game was just awesome in 2 player mode.

Look at my avatar.

Well,I really like co-op games.But I'm just addicted to shooter and fighting games.''HEEELLLL YYYAAA!TAAAKE THIIIIIIIIIIIIIIIIIIIIIIIS!''And so on.