Remember when Kids' WB showed good cartoons? (Heck, remember when "The WB" existed)?
A lot of former fans cite commercials like this as the beginning of the end. Here's a crude, painful little bit from 10 years ago. Sylvester, Wakko (of "Animaniacs") and that cat thing from Pokemon ("Meowth", I believe) sing "We Flush You a Merry Christmas" around a toilet.
How they got Joe Alaskey to do this and keep a straight face, I will never know.
Click if you dare.