Aw, shucks, I'm real (said the Velveteen Rabbit). 
Seriously, I hope everyone does take my advice here with a grain of salt!
Wahine, on the other hand, really knows her stuff.
Books/websites - exrx.net has descriptions of a wide range of strength and flexibility exercises, anatomy illustrations (apparently lifted from Gray's Anatomy but with their own copyright bug on them
), discussions of muscular weaknesses and imbalances, etc. Their exercises tend to be pretty traditional gym work, but useful.
Lately I'm a big fan of Stott Pilates. Their Comprehensive Matwork Manual is incredibly detailed. (Way too detailed to simultaneously read and do the exercises.) They have a number of good DVDs also.
Yeah, funny people should mention the inner thigh, because I kind of came the other direction. Before I came back to cycling and learned Chi Running (which happened about the same time), I was mostly doing a lot of step aerobics, with a little bit of running. My adductors were way overdeveloped and my vastus medialis were underdeveloped. Since taking up Chi Running and cycling, my thighs are visibly MUCH more balanced.
Speed comes from what you put behind you. - Judi Ketteler