Cyberpunk and Steampunk and other forms of punk

I've never really been into cyberpunk or steampunk plots for the most part. Reading Johnny Mnemonic was interesting.  Something about the classic mafia story in a future world allows for a lot cool ideas and plays off both stories. I think that's what Cyberpunk and Steampunk is good at, being two concepts into the same world. While Cyberpunk is the future while Steampunk is often the past.  In some ways they are totally opposite but in the way they use their tones and idea to tie though two worlds.