(YouTube link)
Pretty rare episode that only aired a few times.
Nickelodeon was trying to find a sketch comedy replacement for "You Can't Do That on Television" and "Roundhouse" during the time; ("SNL for kids"). They aired this pilot/special on Nickelodeon back in early 1994 and it did well enough to turn into a full series lasting 10 seasons (1994-2005).
Some differences in the pilot:
-Different colored set/garage
-Different opening sequence showing TLC performing the theme song
-Shorter sketches (possibly following "You Can't Do That on Television's" format)
-Transitions featuring '90s celebrities (in a sort of similar fashion to the '60s sketch comedy show "Laugh-In")