My list:

Divine Divinity - under rated action RPG I need to try

Arx Fatalis - I own this already, but it is really difficult to install.

Unreal Tournament 2004 - best version of the game. I lost my code years ago.

Ultima 7 complete - My children need to play this.

Balders Gate2 Complete. I already own it and never finished it. Worth $5 not to have to mess with multiple CDs

Populous2 - Already own it and still have my saved game codes. Convience purchase.

Sacred Gold - 2nd best action RPG to DiabloII, I own three copies. Installing from disks and patches is a full day process.

Locomotion - I already own it, but am a sucker for Chris Sawyer's games

POD Gold - Already own it, but another one that is a real pain to install on a modern machine.

Speed Busters - Supposed to be like a newer version of POD. Need to try it.

NOX - recommended by a close friend.

I have already all the games I want. Was wondering what game to put in yesterday Facebook code giveaway, so I got my attention on Icewind dale 2.

I didn't win, so tonight I bought it and now its downloading. :)

Had 0 luck with all the holiday contests so I bought a few of what I could.

Lands of Lore I/II pack (played hte 2nd one and loved it back in the 90's, never played 1)
Nox (I remember loving this game, an dthought the combat was very fun)
Last Express (heard good things about it, missed out on it when it was released)
Enclave (Loved games like Severance and Die by the sword, so thought I'd give this a try)
Wing commander 3 (One of the series I missed out on, couldn't resist)
Dungeon Keeper 2 (One of my favorite RTS games, just nothing like it aside from Evil genious)

I'm think I will buy:
Under a Killing Moon :played a lot in my childhood
The Longest Journey:it looks good and people recommend it
Myst:Masterpiece Edition:same a UAKM
Gabriel Knight:Sins of The Fathers:want to play a lot
Beyond Good and Evil:never heard of it,but it looks awesome.

I put aside money for the Steam, D2D, and GoG holiday sales and spent a little more than half just at GoG. Not matter though since I have most of what I want on Steam already and things like Space Marine aren't dropping in price that much during this sale anyway.

I bought at GoG so far:

Divine Divinity
Beyond Divinity - I've been meaning to get both Divinity games for a while now
Nox -Heard good things about it
Oddworld Stranger's Wrath - Enjoyed it on the Xbox and wanted the drm free version and D2D is taking to long to put it on sale
Oddworld Abe's Odyssey - Wanted to try it
Oddworld Abe's Exodus - Wanted to try it
Rayman Forever - Its suppose to be good and I could use more platformers
Rayman 2
Rayman 3
Fahrenheit
Alone in the Dark
Alone in the Dark The New Nightmare
Empire Earth
XIII- Never got to try it on Xbox or PS2.

Depending how much I have left after Steam and D2D's sales I might buy The Longest Journey and Syberia games.

15 games, Ultima series and i cant be arsed to look how many other games i got on my account

Cool thing is i now own 155 games and im not done yet, Hopefully i can get another 15 atleast when i put more moneys in the bank :3

Enjoy my money GOG <3

Only Fallout 1 and 2 today. (have a boxed version tucked away somewhere already)
I'll grab a bunch more in a few days, probably all the D&D stuff I don't have on GOG yet.

And then maybe something I'll play as well. Who knows.

Ultima VII recommended by a friend

Dungeon Keeper 2, i already own a copy, but its hard to install so i bought it here

Starflight 1 + 2 well, just for fun...

Haven't got anything yet, and the next time I get some money is very close to the end of the sale, but I'll try to load up on the following.
Unreal Gold and a copy of Unreal Torunament '99 for my friend as a gift (his birthday is the day the sale closes, funny :P) - I want to also give the stellar Unreal Tournament '99 to my friend, I'm getting a boxed copy for Christmas
Duke Nukem 3D + another for my friend - Because it's one of the many must-haves on GOG!
Serious Sam TFE + another for my friend - Because I deserve the pure madness that Serious Sam is, and because I want to share the pure madness to others as well!
Fallout 1 + another for my friend - It's another GOG must-have, of course! Likely he may or may not have a copy of the game, but I know he loves the Bethesda Fallout titles, and so I shall give him a piece of gaming history.
MDK - Earthworm Jim is one of my weird guilty pleasures, so why not try the also-just-as-weird MDK?
Earthworm Jim 1+2 - Because it's one of my many guilty pleasures! Wish it had the music of the Genesis or SNES versions, but the SEGA CD/DOS music is good enough on its own.
SimCity 2000 - I love me some sims, and I had an abandonware copy that I got just days before it appeared on GOG, so I'd like to support the DRM-free revolution and sorta want to support EA! (not the EA of today, if only I could travel through time and support the good ol' EA and Maxis)
Yeah, I'm gonna load up on GOGs, I only have all these freebies!

Broken Sword 2, 3, 4
King's Quest series
Police Quest series
Space Quest series
Gobliiins trilogy

Because I love adventure games and have wanted the classic ones for a long time.

Heroes Chronicles - Because it's the only part of the classic 1-4 Heroes game I didn't have

Demon Stone - because screenshots look cool :P

so far:

Planescape Torment
Baldurs Gate 1
Baldurs Gate 2
Icewind Dale 1
Icewind Dale 2
Fahrenheit
Heroes Chronicles
Fallout 1
Fallout 2

will probably end up getting a few more when payday comes closer to new years :P

Neverwinter Nights - looked great and wanted to expand into the DnD genre.
All of the modules available made this a must have.

Icewind Dale - I am reading Dark Elf and Icewind trilogies and the story line
Intrigues me.

I ordered a couple of space sims. Not my usual diet, but Privateer got me hooked. And I bought a joystick just for playing Privateer, and now that I have one, I might as well buy some games that make it worthwile.

Wing Commander 1+2, 3

I remember playing WC 1 on my cousins' SNES when I was a kid. Cool cutscenes, but I never even finished the first mission. Let's see if I can do it now!

Independence War

I stopped myself from buying 1+2 at once. I'm not sure if I can handle the physics.

And also, for good measure, some rpgs and adventures:

Starflight 1+2

I usually don't like games that old, but there are not too many sci-fi rpgs and for this price, I'll just take a chance.

Simon the Sorcerer 1,2

I played both in German, but I have a really strange version of part 1 that won't run on anything but Windows 95/98. Not even DosBox!

EDIT: Also, I did not buy Simon 3D. Because I hate those crappy 3D graphics. I really don't understand myself, I'd play a pixelated old 2D game any day, but I can't stand this old 3D graphics if it is used to display people (not just scenery...or spaceships).

Added BG 1&2, IWD 1&2 and Lionheart to complete the RPG set,
Stronghold 1 as an impulse purchase.

Never played Lionheart or Stronghold, BG's and IWD's I already have boxed.
(and I very much doubt I'll play any of these any time soon)

I think that's everything I wanted from GOG catalogue.
Now I can stop browsing concentrate on new additions.