I know Anderson Silva is the most popular guy in regards to an mma guy.
But there is another guy by the name of Joe Riggs in my opinion who started boxing when he was young and he actually did box before switching to mma ( not pro)
http://en.wikipedia.org/wiki/Joe_Riggs#cite_note-knucklepit-0
But yeah Joe Riggs is out of the big mma scene since 06 since his back problems and starting a family. But all and all back in the 04 to 06 he was known as one the mmas boxing specialists due to the fact that his stance and movement was that of a conventional boxer and since he wrestled in high school unlike other boxers he didn't have to switch to a squared up stance since his wrestling helped him retain his traditional boxing stance
Rampage Jackson ever since joining the UFC, his boxing has been sick. Great counters with sick power. His textbook counter KO's on Liddell & Wandy are amazing.
Frankie Edgar's display on Sean Sherk at UFC 98 was phenominal. Also as stated above BJ has some sick boxing in MMA, just watch his display on Sherk.
Also the Diaz brothers Nick & Nate have had great success with boxing in MMA. Nate just showed it last month again Melvin Guillard that was a pretty good fight. Also Nick Diaz vs Frank Shamrock & Scott Smith.
That BJ Penn-Sherk fight was so over rated. The only thing he did in that fight was jab.
Marcus Davis:
http://upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Marcus_Davis_UFC_80.JPG/200px-Marcus_Davis_UFC_80.JPG
17-1-2 (12 KOs) as a pro boxer
Chris Lytle:
http://upload.wikimedia.org/wikipedia/en/thumb/e/ee/ChrisLytle.png/225px-ChrisLytle.png
13-1-1 (17 KOs) as a pro boxer
Jeremy Williams (sam peter nearly killed him)
48-5-1 (42 KOs) as a pro boxer
i don't remember their names but i remember watching an undercard for UFC 98 where both fighters fought standing up the whole time. they were actually throwing great combinations and with speed too. it was one of the more entertaining fights of the night imo.
I think Randy Couture has an effective blend of boxing. I don't think he would be a contender in boxing, but he has a deceptively quick jab that is solid and his dirty boxing is like watching Bernard Hopkins rough someone up when clinching.
Rampage Jackson ever since joining the UFC, his boxing has been sick. Great counters with sick power. His textbook counter KO's on Liddell & Wandy are amazing.
Frankie Edgar's display on Sean Sherk at UFC 98 was phenominal. Also as stated above BJ has some sick boxing in MMA, just watch his display on Sherk.
Also the Diaz brothers Nick & Nate have had great success with boxing in MMA. Nate just showed it last month again Melvin Guillard that was a pretty good fight. Also Nick Diaz vs Frank Shamrock & Scott Smith.
Are you ****ing tripping bro????
All the guys you mentioned you are right about them no doubt but nate didn't is a TERRIBLE boxer one of the worse his very lazy bad sloppy footwork no power Melvin isn't a great boxer either his just a powerful puncher and Melvin was beating him except Melvin got stupid and got jujitsu'ed
GSP has one of the most effective jabs I have seen by a Mixed Martial Artist. He gets what it is used for. Most don't realize what that the most neglected of tools can do for spacing and ring control.
GOOD CALL on Jens Pulver!!!!
Jens did box pro and he is super respectful of boxing his like a poor mans oscare in a way his compact and scrappy with good combo although no were NEAR as good as oscar but thats alright.
Jen is very very unbiased and realistic and super respectful to boxing
BJ Penn is probably known as one of the better boxers in the UFC. There's a heavyweight named Junior Dos Santos who I think is very good with his hands.
Some of the little guys like Jens Pulver and Takanori Gomi can box. I would also say Vitor Belfort, Andrei Arlovski, and Pedro Rizzo when he was younger. I also think that my favorite MMA fighter, Mirko Cro Cop could let his hands ago when he was in his prime.