Yes, I've seen that poster before and it's pretty hideous. I'm not sure who would buy it because how many people are a fan of that exact collection of artists?
Anyway, for those struggling to identify everyone...
Top row: Sarah McLachlan, Layne Staley, Smashing Pumpkins, Robert Smith, Perry Farrell, Sinead O'Connor
Middle row: Bjork, Chris Cornell, Eddie Vedder, Morrissey, R.E.M., Trent Reznor, the mystery guy that no one has figured out
Bottom row: Sonic Youth, Tori Amos, Scott Weiland, Red Hot Chili Peppers.
Mystery guy looks a lot like Jeff Buckley but obviously that weird outfit is all wrong.