The real philosophical question of our time is:
Do you wait for a game to come to GOG, to get it DRM-free; or do you take the leap and get it from another DD site with DRM, knowing that you probably won't have gotten to playing it in your backlog, before it's here.
I usually get games here unless GG carries them and GOG doesn't(and there's a sale on said game at GG)....once in awhile i'll also get a Steam game for the cheevos(again if GOG doesn't carry it, has a buggy version[this happens sometimes], or has a less than complete version.).
Hmmmm, well as it currently stands my list is short:
X-Com series (Microprose is on GOG, so likely in the future)
Vampire Masquerade Bloodlines (Troika too, so again likely)
Neverwinter Nights 2 (I didn't really like the first game by Bioware, but it's the only video game based on the D&D rules I haven't played, also Obsidian is unlikely to ever come to GOG, too new)