Thanks for the clarifications to the earlier list, I'll edit stuff in.
Non-GFWL games that do not appear to exist digitally on Steam or Amazon or GameStop
A Vampyre Story - not on Steam, retail-only on Amazon - Available on GamersGate
Cubis Gold - Cubis Gold 2 is on Amazon, but not the original - On a bunch of Yahoo free games portals, and Cubis Gold 2 is on Amazon for DD
Flight Simulator X - Amazon, retail-only, no digital
Harry Potter and the Deathly Hallows Part 2 - Amazon has it retail-only, no other digital outlets I can find
Zoo Tycoon 2 - Retail-only on Amazon
This may be your last chance to buy these games digitally.