Madcow's post covers it all, I just want to post to add reinforcement to what he said about growing the body as a whole and not throwing eevrything and the kitchen sink in a program to 'cover all the bases'.
I strongly believe in dealing with problems when and only WHEN they arise. Generally, when trained equally and as a whole unit, the body will naturally grow in a symmetrical fashion. When you look at people with imbalances, it is usually juiced gym rats who come to the gym for a marathon of machine work, curls, and pressdowns. They are the guys with 19 inch arms and 50 inch chests, but have 20 inch thighs and a 14 inch neck and 8 inch forearms. To put it nicely, they look like ridiculous assholes who couldn't fight their way out of a paper bag. If you look across the board at legit athletes who use weight training as a main form of preparation for their sport (sprinters, throwers, football, baseball, basketball, wrestling) you see evenly developed, functional looking, symmetrical muscle. These athletes don't "try for a certain look", they simply train their body as a whole with functional movements and the way they look is a side effect of their training.
Mark67,
You're probably looking at 5x5-type setups on paper and the lack of happy horseshit exercises and filler probably has you concerned that you'll leave the gym feeling like you didn't get a workout in, but just try it, the first couple weeks you'll love the off-days, you're appetite will be through the roof, and you'll sleep like a baby as soon as your head hits the pillow at night. It is a lot more work than it looks like on paper, and I think you'll realize that a typical bodybuilding split isn't really much of a workout compared to how you'll feel training like this.