He was the greatest. I would think Chuck Norris would have jumped on the MMA bandwagon but I think he is so stuck in his ways that he think most people just want to see stand up. I do respect Chuck though, as he is also one of the inovators of MMA.
IMO, right now, the closest thing to Bruce Lee is Cung Le. IMO he is so far advanced in the standup and takedown game it's rediculous. I just wish he got into it at a younger age.
I would love to see a Wing Chun practitioner in MMA also. I think many clinches would end up in KOs.