The Morning After
Buzz! Buzz! Buzz! It's 1943! FDR is president, there's a war going on, and food is being rationed!
Funny or Die
Secret Agent Bob
PSAs may be serious business when they're done in earnest to raise awareness about diseases and political causes, but they also provide a perfect format for comedians to do some pretty ridiculous stuff. Worried about cannibalism? There's a PSA for that. Stressed about all of your first word problems?