Ha ha ha....while I didn't really watch the show that often, that theme song made me laugh my ass off every time I happened to catch it. Those grins alone while mouthing the lyrics....lol.
Personally, I hope it's a straight up spoof this time, toning down or removing most of the body part/fluid, gay, and pot jokes that saturated the first two movies. One of the Zuckers is said to be at the helm of this one, so a straight up parody is likely in order, neh??
I still maintain that the absolute funniest moment in either of the two movies is watching David Cross do a headspin with his arms outstretched while in a wheelchair during that hilarious parody of the Nike basketball commercials where they use sounds of the court to make music. Great, great stuff.

Bantam13
--Another great moment is when Chris Elliot's character died at the end of the second one....I just wished it would've happened a LOT sooner than when it did....