Found a few little goodies so far.

Prince of Persia 1 and 2 official strategy guide
Game players encyclopedia of Game Boy Games volume 2
Armed and Dangerous (PC)
Descent (PS1)
Tomb Raider I and II (PC)
Earth 2140 (PC)

hey all, yesterday got a few gamecube games

Gamecube
Odama
Splinter cell
NCAA Basketball 2K3 ( finally got one )

Gameboy Advance
WWE Survivor Series
Legend of Zelda

Not really video game find but I found a book today at a thrift store:

Programming Microsoft SQL Server 2000 Database $1

At a flea market they had a lot of EA Sega Genesis Games. 6 for a 3 dollars. Granted, sports games arent worth anything, but they are complete and I needed NBA Jam so...