For IGN Prime users:
Dungeon & Dragons Online Beta

NecroVisioN Hardcore Edition is 75% off, down to /[url=http://www.gamersgate.co.uk/DDB-NECVISLC/necrovision-hardcore-edition-bundle?caff=2157851]£4.99 at Gamersgate (caffeinated links).

And a few discounts at Impulse, including From Dust, [url=http://www.impulsedriven.com/entwgotye]$7.49 Napolean/Empire Total War bundle (for Steam), and $7.49 Gotham City Imposters.

Edit: I'm sorry, Shopto already have a better price for Deus Ex: Human Revolution: £5.84 (about $9), Steamworks. :)

Tropico 4 on Steam
66% off
+ Free weekend to play it :)

And this amazing deal as well, which is cheaper and has Tropico 1, 2, 3, and the expansion for 3. All for less than 7 bucks.
http://store.steampowered.com/sub/12169/

Supposedly Troico 4 is more like tropico 3.5. I already got Tropico 3 plus the expansion so I did not get it. My steam backlog is big enough as it is (and yet I DON'T hesitate to get silly humble bundles making it bigger)

Not sure if it is much of a deal or not, but if you pre-order Max Payne 3 on GG before the 15'th of May you get Max Payne 2 for free.

http://www.gamersgate.co.uk/DD-MP3/max-payne-3

Region restricted offer , so both Bethesda and Valve can shut the fuck up . ( misleading advertisement on the front page of the Steam store )

Get Games :
Dungeon Siege III + DLC 85% off
Conflict Denied Ops 75% off
Mini Ninjas 75% off
Rogue Trooper 75% off
Thief: Deadly Shadows 75% off
Tomb Raider Anniversary 75% off
Tomb Raider Legend 75% off
Tomb Raider Underworld 80% off

The Focus Home Interactive games are 50% off this weekend! @ DotEmu
Includes:

Loki,Runaway 1 & 2,Silverfall + expansion,Gangland,Beyond Divinity,Escape From Paradise City & Freedom Force vs The 3rd Reich

Anyone know if Crusader KIngs 2 is going cheap anywhere ? I have looked around, thought someone might know of secret site , I'm desperate to get it ! :-)

http://isthereanydeal.com/
follow this site :)

Rogue Trooper is a pretty good game (even though it might look like your standard 3rd person action game, but with smurf blue soldiers, it plays incredibly well).

Hey thanks , thats an interesting site :)

Not sure how fast you want to buy it, but it's said to be in the upcoming Amazon May sale.

Should be on GOG any week now ..

Yep , i'm waiting for it .

If it gets released before Startopia, I'm holding you personally responsible ;-P