Classic TV Theme songs, Re-Whipped

Here’s four classic TV theme songs which have been deconstructed in some way to become even better (or, as with anything to which “Night Court” is added… worse).

Cheers, as sung by "Elvis"

Seinfeld, with vocals by David Lee Roth (Van Halen... I shouldn't have to tell you these things):

WKRP in Cincinnati, the end credits explained

Barney Miller, but with the music from "NightCourt" (created by "Barney Miller" writer Reinhold Weege)