Shows a bunch of guys randomly tripping in GTA 4:
http://www.youtube.com/v/xBBqYsvZ4dI&hl=en_US&fs=1&rel=0
Endorphin Wrestling!!!
http://www.youtube.com/watch?v=eLbAz1j92oQ&feature=related
Pit of Doom (need I say more?)
http://www.youtube.com/v/bQikT7Fhm8s&hl=en_US&fs=1&rel=0
http://www.youtube.com/v/xBBqYsvZ4dI&hl=en_US&fs=1&rel=0
Endorphin Wrestling!!!
http://www.youtube.com/watch?v=eLbAz1j92oQ&feature=related
Pit of Doom (need I say more?)
http://www.youtube.com/v/bQikT7Fhm8s&hl=en_US&fs=1&rel=0