You know, rock/pop bands doing vaudeville or music hall style songs.
Harry Nilsson did this a lot. So did the Monkee's when they did his song "cuddly toy". Queen's "Good Company" and "Seaside Rendezvous". The Beatles "When I'm 64". Randy Newman.
Personally I'm a fan of this kind of thing, but I know it's not for everyone. What are some other examples of this?