Here are links to a few videos of note:

Bill Nershi and Michael Kang, playing the lift line, Crested Butte, CO, 1993

Eclectic Method remixes Bob Marley

Cornmeal, Hot Buttered Rum and Creek Rd Ramblers at Summer Camp 08

When Trey walks the carpet, everyone is Jeff Kravitz

The Mellow Show (SNL): Jack Johnson, Dave Matthews, John Mayer

Marco Benevento with Mike Gordon and Brad Barr at Tonic

Family Groove Company covers Eminem, Summer Camp 08

Yuto Miyazawa with Galactic, BB King’s, NYC, 5/8/08