Yes they can on most Kinect games, but you do need a bit of space!
No, but that would be cool though. :D
Four people can play the wii at the same time.
yes 7 people can play at the same time on certain games
No.
you can play as giga bowser with the action replay and yes 2 people can playat the same time
You can't play 2 instruments at the same time. You can get 3 different people and play the microphone, drums, and guitar.
Yes.
as may people as you what but less than 32 though
Two people can use the same computer to play Moshi Monsters, however, not at the same time.
If they live in your house then without moving to another town your two characters can not play at the same time.
pogo.com
Halo works but I'm not sure of others.