Terrific list! Here are a few of my favourite irrationally exuberant songs:

Machine Gun - Commodores
Tank! - The Seatbelts
La turlutte du rotoculteur - De Temps Antan
Super Orgy Porno Party - The Planet Smashers
Peaches En Regalia - Frank Zappa
A Kiss To Build A Dream On - Louis Armstrong

(Gosh, this is probably going to get caught in the spam filter, isn't it?)