I don't have a separate page for non-a cappella music yet, so I'm going to stick Moxy Fruvous here.

Rick Burkhardt, of The Octopus, put it best: "What does Moxy Fruvous sound like? They don't sound like anything. Let me try: they sound like the Roches meet XTC at a party thrown by Camper Van Beethoven for Robyn Hitchcock's marriage to Cole Porter with They Might Be Giants as wedding band and Tom Lehrer acting as minister, but just as everybody starts singing old Queen songs the party is crashed by the entire cast of the Muppet Show. Moxy Fruvous is that good."