To say supplements in general are bogus is rediculous. Even if you only look at the 'basics': whey protein, multi-vitamin, and creatine, who could argue that those 3 are worthless?
Of course as soon as scientists find one's that actually work the DEA wants to make them illegal. *cough*1-test & 1-ad *cough*
Now, I will say that too many people turn to supplements rather than finding out about proper nutrition first, and that is a big mistake. No pill can substitute for a proper diet no matter what your goal is.