GOG are having a 1 year anniversary sale - buy one get one free on Interplay games.
Full list:
FALLOUT $5.99
FREESPACE 2 $5.99
GIANTS: CITIZEN KABUTO $5.99
SACRIFICE $5.99
REDNECK RAMPAGE COLLECTION $5.99
DESCENT 3 + EXPANSION $5.99
STONEKEEP $5.99
LIONHEART: LEGACY OF THE CRUSADER $5.99
SHOGO: MOBILE ARMOR DIVISION $5.99
CASTLES + CASTLES 2 $5.99
HOSTILE WATERS: ANTAEUS RISING $5.99
CONQUEST OF THE NEW WORLD $5.99
DIE BY THE SWORD + EXPANSION $5.99
SHATTERED STEEL $5.99
EARTHWORM JIM 3D $5.99
INVICTUS: IN THE SHADOW OF OLYMPUS $5.99
VR SOCCER '96 $5.99
FALLOUT 2 $5.99
FALLOUT TACTICS $5.99
FREESPACE + EXPANSION $5.99
DESCENT + DESCENT 2 $5.99
EARTHWORM JIM 1 + 2 $5.99
MDK $5.99
KINGPIN: LIFE OF CRIME $5.99
MDK 2 $5.99
JAGGED ALLIANCE 2: UNFINISHED BUSINESS $5.99
MESSIAH $5.99
M.A.X. + M.A.X. 2 $5.99
BATTLE CHESS SPECIAL EDITION $5.99
SCREAMER $5.99
F/A-18E SUPER HORNET $5.99
EVOLVA $5.99
KINGDOM: THE FAR REACHES $5.99
I've already got a lot of thier best games but I think I'll use this to snap up Earthworm Jim and Descent.