I like Winamp for a lot of reasons. One being that it plays a ridiculous number of audio types, and another being that you can play games with it.

Let's say that you're using the Bento skin (you can check this by going to Options → Skins → Bento)

Then if you go to your preferences screen (hit CTRL+P) and navigate to Skins → Modern Skins in the left pane and then the Current Skin tab on the right pane.

After all that, double-click on the animation for a surprise.

You get to play that Snake game. Graphics are a bit simple, but hey, you don't worry about that. You can compensate by playing some really good music.