I just try to avoid all the classic samples that have been done a thousand times:
http://www.the-breaks.com/perl/stats.pl
Other than that sometimes I'll load up a sample and can't ever really make anything good out of it. Seems to happen the most with classical music. Like this Shostakovich piece. It's dope as hell, but can you flip it?
(fast forward to 5:00)
anything from the 70s/80s have usually already been oversampled like, a BUNCH of times. personally i try to go out of my way to sample things ppl normally would: something odd/random from overseas, super underground/folk kinda music or even more receent/present tracks from this millennium, yu tend to get a reeeal diff sound and dont enbd up sounding like alot of other competiting producers
+1I don't like to sample Stevie Wonder.
anything from the 70s/80s have usually already been oversampled