Reelz Channel has a lot of movie reviews and trailer type shows - but they also have programs like Cheers, Becker, Ally McBeal and Brothers and Sisters.
And no, it isn't the interview where Lara wore the fangs and bit Johnny - I've never actually seen that and not sure it even still exists. Most of those Tonight shows except for a few segments were erased. This is a skit where Lara is making out with Johnny and is interrupted by scorned husband George C Scott - only with a twist ending. LOL.