Here's a few others that I like:
BGMicro has been in the surplus business for a long time. Great shop out of Texas
Marlin P Jones Offers a good mix of electronic and industrial surplus, bought my first set of used solid-carbide PCB drill bits from them.
All Electronics from California has computer and electronic surplus. They tend to be a bit more expensive IMHO but often have stuff the other guys don't.
last but certainly not least, the grand daddy of them all (maybe?)
Surplus Center of Nebraska has everything you need in industrial surplus. Also some electrical / electronic stuff too
