Don't know how many people have heard of them before, but they are some of the funniest guys on the web imo.
They usually take a video game, then imitate it in real life. Yes, you may be thinking that it's been done countless times, but what makes it so funny is the fact that everything's shot in public!
Assassins Creed
Resident Evil 4
Elite Beat Agents (Probably my favourite)
New Super Mario Bros. This one's got a suprise guest at the end, I still have no clue how they got him to do it.. confused
And heres an extra for everyone to dance to! xD
Edit: Just realized topic's been done, delete i guess. sweatdrop
Nintendo Cult!
So long and thanks for the memories.