Lately I have taken to downloading podcasts of Wait Wait . . . Don't Tell Me! and listening to them at the gym, on the bus/subway, and walking down the street. The result of this is basically that I burst out laughing every so often while I'm listening to them -- I'm sure that to the random observer I merely look insane, but I couldn't care less. Listening to them -- but even more so laughing -- always puts me in a great mood, especially when I think about how silly I might look/sound.