The Nitin Sawhney and Bahamadia track is nice...bringing back memories, can't say that I liked the Boondox track though, oh well.
I'm not sayin' these tunes are underground...just dope and live and ATCQ.
Scenario (Live) - A Tribe Called Quest
A Tribe Called Quest - live at MTv Raps (Check the Rhyme)
A Tribe Called Quest "Stressed Out" on David Letterman Live ft. Consequence
And here's something a bit more recent over a classic beat:
Consequence & Kid Cudi - "Buggin' Out 09"