Granted, Mahavishnu Orchestra is an acquired taste ... I happen to like them.

This clip is different from many of the YouTubes because the sound is cleaner and the guys seem 
better able to hear themselves vs. many of the live-in-concert videos. The result is more jazz-like 
interplay. Jerry Goodman totally rocks the electrified fiddle in this performance.

It's always funny to watch Mahavishnu-era Jan Hammer and compare to the official video of "Theme 
from Miami Vice":

In contrast to the top link, here is Mahavishnu's super-heavy performance on ABC's "In Concert" the 
following year:

-- Tom Fine