I've been playing a lot of blitz 5 0 games lately. That's all I have time for and it's quite exciting. I am a TERRIBLE blitz player too, so that's another reason. I think the biggest reason to play fast games though, is to work on tactics. These blitz game are really loaded with tactical tricks and traps. That's what makes them exciting.
The following game is my most recent game. I won this particular one, but largely due to mistakes by my opponent I'm sure. I didn't analyze it at all, but it was a good example of an exciting and sharp game. Enjoy.