Schwarzenegger is an intelligent man. Frank Zane and Dave Draper are pretty sharp, too.
Mike Mentzer was certainly smart (RIP). I didn't agree with everything he advocated--the one set every month idea was in left field--but I agree with far more of what he said than I do with the three aforementioned gents' training recommendations.
Yates was a pretty smart guy. Shawn Ray might be, but the guy is pedantic; he tries way too hard to sound smart, everytime he opens his mouth no less. During the '01 Olympia commentary for Fox Sports, he said something about "there's been lots of word-talking back and forth among the pros this year." Duh, Shawn...how ELSE are we going to TALK? Words are sorta required there bro!
Nasser El Sonbaty and Milos Sarcev are smart men. Milos is one of the few pro bodybuilders I'll actually listen to.
There are far more dummies in the sport. Coleman is awesome, but I'm sorry...the guy's just dumb. "Duh, duh, it's apples an' oranches!" I've been told Paul Dillett and Jay Cutler are rather dim...I don't know about Cutler, but I've heard lots of people comment that Dillett would be lucky to turn on a VCR.
Markus Ruhl might be of average or better intelligence, but that crooked tooth smile sure makes him LOOK stupid...and, of course, all of the Syntholite bodies are owned by some really dumb guys. Greggggg Valentino (or however he spells it) can't even run a SPELL CHECK over his website, for Christ's sake. That clod Greg Kovacs is too dumb to even pull his stomach in when he's looking right at a camera. And Paco Bautista...well. Showing up with double C cups and about seven distinct delt heads onstage isn't too bright.