Good video about 20 common street fighting mistakes.

Learn from this from both sides. First, make sure that you don’t make these mistakes yourself. Second, look for them in your opponent and know how to captialize upon them.

The site it comes from, fighttips.com, has more instructional material. It also has a lot of fight videos. While I don’t find entertainment in watching street fights, you can learn from watching them (mostly about what really goes on and what not to do).