TheTonyOne: Whelp, this is a decidedly NON political thread I'm posting, seeing as this is something I actually know about.
In any case, my biggest regret is the Realms of Arkania games. They're not bad, but I won the third one from GOG, and bought the first two to complete the series. My biggest problem with them is probably how many game mechanics are not explained, even in the manual.
Probably my favorite purchases are the Baldur's Gate series or Freespace 2. They're just good. Baldur's Gate manages to make me feel like I'm a part of the story, even though I dislike the Infinity engine due to the Icewind Dale games (Long story), and Freespace 2 is just great in its own ways.
My biggest disappointments are Eador:Masters of the broken world and Legend of Grimrock. The first one was full of bugs and overall i really liked the original game more (also, i probably won't preorder again because of this game). The second, i felt the gameplay was pretty bad compared to the older dungeon crawlers i like.
The best purchases are:
Anachronox (lost my CD !!), Space Rangers 2 (sadly not being sold here anymore), FTL and the blackwell bundle.
I discovered space rangers and all the wadjet eye games thanks to gog and i'm happy i have ^^