"After playing Principal Belding on ""Saved by the Bell: The New Class,"" Dennis Haskins appeared in several series and TV movies. He most recently showed up on an episode of ""Mad Men"" as Phil Beachum, and on ""New Girl"" as a lecherous Santa Claus lookalike. He released<a href=""http://www.amazon.com/Karaoke-With-Favorite-Principal-Dennis/dp/B002IRDDQG"" target=""_blank""> ""Karaoke With Your Favorite Principal Dennis""</a> in 2009."