Don't think I've actually noticed this thread before, but it prompted me to update my wishlist as it was so out of date given the amount of newer stuff on GOG now.
Crusader: No Regret/Remorse
Space Quest 4/5/6
Tex Murphy: Overseer
Quite a few on there actually, and my actual full wishlist is quite a bit longer. I'll buy them all after I become a millionaire from Richard Branson'ing the D3 auctionhouse (it could happen.)
Edit: Removed a few games which I've picked up since last year. Added Unepic. Dorky humour and metroidvania gameplay, how could I not?
Edit 2: Removed Baldur's Gate 2 thanks to the awesomely generous K_1269.
Edit 3: Removed Alan Wake, thank you MoonGoddess!
Post edited June 02, 2013 by Goatbrush