RE: Who do you think is the best martial artist of all time.
Oh, yeh, and Where's Tony Jaa? He comes from a background of real ring fighting.
Seriously though, in terms of technique, I'd have to say:
Bruce Lee
Jackie Chan
Tony Jaa
Jet Li
Steven Seagal
Chuck Norris
Lets not forget an honorable mention for Chow Yun-Fat.