There are lots of free games, Yahoo has a good section with lots of free games. Mostly puzzle games and distraction games. Or you can read about others misfortunes on FML. Or you can look at lots of funny fails on Failblog. Or if you're into cat pictures / dog pictures they have those too (among other funny things.) You can look up music videos on YouTube. Hulu has free t.v. shows and web shows if you like that kind of thing, and they have lots of old movies for free, too.

Those are some of the things I like to do that cheer me up.