Dips are more pre-disposed to producing dysfunctional mechanics than most upper body exercises. When performed incorrectly, dips will wreak more havoc on the shoulders than just about any other movement.
However, when executed with perfect technique and appropriate body adjustments, they're actually therapeutic on the shoulders. It's important to master the correct form in order to reap the worthwhile benefits while avoiding the potential drawbacks.
We'll admit it, this interview bounces all over the place, but read it and you'll come out about 8 times smarter regarding bodybuilding (okay, maybe 7), plus you'll learn some new kick-ass exercises.