So I'm not sure if everyone knows about this, but ESF is a Half-Life mod that has been around since 2000. This video isn't brand new but I thought I'd might as well spread it around because everyone needs to know about this game. I think it's better than the actual DBZ games already out there, personally.
video's kinda small, but w/e
Go to http://www.esforces.com/ to learn about it.