Thought I'd make a few points (or clear up points that have already been made):
Wallace practiced wrestling in high school and college, and studied Judo while in the Air Force. He comes from a grappling background, and his grappling skills are very good. If you think he's a "grappler hater", then watch his original series of instructional tapes. Vol. 12, 13 and 14 deal with taking down strikers and fighting on the ground.
Wallace kicked only with his left leg because he tore ligaments in his right knee (the anterior cruciate ligament and medial collateral ligament) after his Judo training partner landed directly on top of his knee joint when Wallace was practicing a reaping hip throw.
Rather than bitch and moan about how badly injured he was, he took up Shorin Ryu Karate while recovering from surgery on his knee. He began studying while stationed in Okinawa with the air force, and he received his black belt in 9 months. He was training from 4 in the afternoon until midnight, 7 days a week.
Shorin Ryu includes only waist-height and below kicks. Wallace started off kicking low (i.e. he learned leg kicks before head kicks), then as he gained experience in Karate point tournaments, he figured he needed tactics to improve his chances of winning. He did this by fighting side on (thus removing most targets) and developing his flexibility and kicking ability to such an extent that he became one of the best kickers in the world.
I agree with Wallace in his opinion of MMA fighters (not MMA itself). I am 100% behind the idea of cross-training ("mixed martial arts"), as I believe it can only make you a stronger fighter. Believe it or not, Wallace was one of the earliest advocates of cross-training, because he trained in Judo, wrestling, Karate, Kickboxing and boxing. He didn't train elbows or knees in competition because Thai Boxing wasn't well known back in the 60s, 70s and 80s; at least, not as much as it is now.
For those who think Wallace was a coward for not fighting in low-kick contests. Um, newsflash - people who spar / fight / rumble / whatever you want to call it, in front of televised audiences are "entertainers" and are paid to entertain. At the time, Wallace was giving the fans what they wanted to see. The audience, not the fighters, dictate the rules over time. As entertainers, we give the fans what they want to see, right? So back when Wallace was fighting, nobody in the audience wanted to see elbows, knees or low kicks. They wanted to see the flashy stuff, and Wallace certainly delivered plenty of that.
I honestly don't think the audience has changed all that much. Noticed how in MMA matches the crowd boos when the fight goes to the ground and looks like nothing more than gay softcore porn? Two sweaty guys holding each other for minutes at a time? The crowd wants to see knockouts with flashy techniques like punches and kicks to the head.
I agree with Wallace in that many of today's MMA fighters are sloppy. The majority don't train don't train basic techniqes. Your average MMA fighter will probably NEVER punch as sharply, or cleanly as a boxer; your average MMA fighter will probably NEVER punch as sharply, or as cleanly as a Tae Kwon Do practitioner. I think what Wallace is getting at is that many MMA fighters today, including lots of the top UFC guys, are very poor technicians. Their technique is sloppy - it looks f-ing UGLY!!! I say MMA is going back to the "throw and hope" days of the 50s and 60s. Wallace took combat sports forward; MMA events like the UFC is taking it back, I think.
If you think I don't know what I'm talking about, you're wrong. I train TKD, boxing, BJJ, and Bill Wallace's "Superfoot System."
I've had seven fights in the cage so far, and I've won all of them by head kick KO. Oh, and it was a front leg "Wallace" head kick. Go figure.