Just saw this notice. Bethesda Games are 50% off at GAMERSGATE (Downloads) this weekend. Gamersgate Bethesda Sale US
Some that are listed:
Morrowind Game of the Year: $9.95
Oblivion Game of the Year: $9.95
Fallout 3 Game of the Year: $9.95
Fallout Las Vegas w/addons: $9.95
Here's the UK site: Gamersgate Bethesda Sale UK
BTW: The games require a Steam acct to activate, even the earlier games.