From GOG I got The Longest Journey, Praetorians, Bloodrayne, Advent Rising, Sanitarium and Creatures Exodus. Good haul. :)
I also found a box copy of Bioshock for $5 elsewheres. Very pleased.
Looks like we're all rich with games now. Hurrah.

I was so intrigued I had to Google those.

Well this is partly a combo of recent sales and the actual big sales but:
GOG
Tex Murphy 1 & 2, Advent Rising, Bloodrayne, Psychonauts, The Longest Journey, UFO Aftermath & Aftershock
Steam
Overlord 1 & 2, Osmos & Lucidity (awesome game, no idea why is scored so low except for people expecting it to be the next monkey island style adventure)

is "too much" an acceptable answer?

GOG
-Commandos 2&3 Pack
-Combat Mission Beyond Overlord
Steam
-Foreign Legion : Buckets of Blood
-Sniper Elite
-Rainbow Six Vegas
-Rainbow Six Vegas 2
-Torchlight
-AI War : Fleet Command
Gamersgate
-King's Bounty : Armored Princess
-Men of War

GOG.com:
Beyond Divinity
BloodRayne
BloodRayne 2
Heroes of Might and Magic® 3: Complete Edition
Imperial Glory
Might and Magic® 6-pack: Limited Edition
Realms of Arkania 1+2
Realms of Arkania 3
Tex Murphy 1+2 (free)
The Longest Journey
The Nations Gold Edition
Elsewhere: Nothing

on GOG:
Might and magic pack (1-6)
Steam:
Torchlight
Eidos Pack (batman arkham, and a bunch of other stuff)

Bought these on GOG during the sale.
Advent Rising
Beyond Divinity
Blake Stone: Aliens of Gold
Blake Stone: Planet Strike
BloodRayne
BloodRayne 2
Broken Sword 3: The Sleeping Dragon
Combat Mission: Beyond Overlord
Commandos 2+3
Creatures: The Albian Years
Creatures Exodus
Creatures Village
Dark Fall: The Journal
Far Cry�
I.G.I. 2: Covert Strike
Imperial Glory
Iron Storm
Myst: Masterpiece Edition
Oddworld: Abe's Exoddus
Oddworld: Abe's Oddysee
Patrician 1+2
Port Royale
Praetorians
Psychonauts
Realms of Arkania 1+2
Realms of Arkania 3
Red Baron Pack
Riven: The Sequel to Myst
Sanitarium
Second Sight
Sensible Soccer 2006
Silent Hunter� 2
Simon the Sorcerer 2
Simon the Sorcerer 3D
Stronghold
Stronghold Crusader
The Incredible Machine Mega Pack
The Longest Journey
The Manhole: Masterpiece Edition
Tropico Reloaded
UFO: Aftermath
UFO: Aftershock
Steam:
Eidos Pack (mainly for Batman AA)
Fuel
Killing Floor
Torchlight

GOG:
Advent Rising: $5.99
Divine Divinity: $5.99
Commandos Ammo Pack: $5.99
Praetorians $5.99
-$6.00 because of promo = $17.96
Steam:
Trine: $4.99
Defense Grid: $2.49
Jade Empire: $3.75
Evil Genius: $1.99 (at this price I bought it on Steam because I'm not entirely sure if I'll like it)
AudioSurf: $2.50
Torchlight: $10.00 (four days later they were selling it for $4.99. This is my only regret, but the game is good).
Medieval Total War: $4.99
Steam Total: $30.71 + $17.96 for GOG's = $48.67 total, on 11 games, averaging $4.42 each.
With these many games plus the backlog I'm still not through with from the Anniversary sale... I'm pretty much set. GOG's surprises down the road will have to be pretty darn big for me to cash in, at least for the next 4 or 5 months.

Made em up except for the first one. The 4th graders in South Park know what I mean.

Bought:
GOG
The Longest Journey: Love it
Sanitarium: Good from the little I have played
Earthworm Jim (gift and for myself) OK
Darkfall: Don't like it.
Steam
Shooter Pack: Cool for the cost
Penumbra: Awesome
Trine: Awesome
Indigo Prophecy: Amazing
Jedi Knight II: Don't like it
Titan Quest: Good

GOG:
Creatures Exodus
Creatures: The Albian Years
MegaRace 1+2
Pro Pinball Timeshock
Pure Pinball 2 REDUX
Pro Pinball Fantastic Journey
Sacred Gold
GOG price after reduction: $35.33
I think all those were either 40% or 35 % off, the rest that I was at least slightly interested in were too little difference to really bother with at the moment. I can get them at full price later when I actually feel like trying them.
I also got the Machinarium+Samorost2 holiday pack from Namur because Amanita Design wouldn't accept my card, that guy's awesome, and so is Machinarium (haven't had time to play Samorost2 yet).

GoG.com
Ghost Master
Stronghold
Stronghold Crusader
The Incredible Machine Mega Pack
Tropico Reloaded
+ all the free games
Steam
Anno 1404
Burnout Paradise: The Ultimate Box
Defense Grid: The Awakening
Foreign Legion: Buckets of Blood
+ Madballs in Babo Invasion Xmas pack

GOG:
Advent Rising
Steam:
Mirror's Edge *
Jade Empire
Indigo Prophecy
Flatout
Chains
*with the help of bio2hazard (stupid regional restrictions!)
I'd probably have bought a lot more on Steam, if it hadn't been for the annoying regional restrictions stopping me getting every game I wanted.
It turned out that while there are lots of cool games on GOG, I already have most of the ones I want, and the couple of others I want are overpriced, so even in the sale they weren't that tempting. Hopefully they'll get better discounts in upcoming sales.
I was expecting to get a whole load of GOGs, but I ended up saving the cash for something special on Steam, and then it never really arrived.