Here is a video of Stephen Sim at his TEDxWinnipeg talk about improvisation. The theme of the entire day was PLAY, so naturally, improv played nicely into this theme.

For more information about improv workshops go to -> The Improv Company

For more information about TEDx Winnipeg got to -> TEDxWinnipeg

Here is a video of CRUMBS performing at the TEDxMunich. The theme was HOT SPOTS and CRUMBS did an improvisation about prototypes inspired by the content of all the speakers that day.