I was under the impression that their denim is actually quite good and their logo-free (or at most, subtle/minimal corporate embroidery) jackets are decent and at least worth considering.
I'm no apologist for serious douchewear, but G-star is one where I make an exception to. They are, after all, a business, so I'll excuse them for selling hordes of tacky garbage (the logo t-shirt, logo hoodie, etc) to fund their decent pieces. I apply the same line of thinking to designers such as J. Lindeberg.
Really can't stand the name though... G-STAR... it seems to fit the profile of some rather undesirable persons.