@ Satis: yeah I know that they have daily sales too, but the majority just run through to the 4th of July. And wtf @ not being able to buy alcohol after 10?

Most night shops down here make the majority of their income on alcohol and cigarettes I'm sure, and it's not like we've devolded into a lawless society or anything yet. Silly rules.
So here's my grand overview of what, imho, are the better deals.

Prices will be in Euro, so just detract 10% of them and then put a dollar/pound sign behind them to get your equivalent.

Also, keep in mind that I take into account both the quality of the game(s) and the price. Some games aren't omgwtfBBQ cool but are so cheap that they are worth it, etc. My recommendations are indicated by a *
Packs/Bundles-
Call of Duty Pack, 27 €: I'm not buying it myself out of principle, but it IS a pretty great deal.
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Commandos Pack, 4.75 € : classic series. Not sure how all of them withstood the test of time, though. Also available seperately (and cheap)
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Codemasters Racing Pack, 21.75 € : if you love racing games, these games are a sweet deal. Also available seperately. I'd recommend Fuel and Dirt 2 in particular.
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Telltale everything pack, 50 € : If you like the Telltale humor and are into adventures, this is one whopping deal.
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THQ complete pack, 50 € : If you don't own any of these games yet and like action/strategy, this is a great deal.
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Painkiller: Black Edition, 5€ : Still one of the best "don't let go of the trigger" shooters in the biz.
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Penumbra Collector Pack, 7.5 € : Best horror adventures of the last few years.
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Men of War: Gold edition, 8 € : Bundles Men of War and its expansion Red Tide, some of the best strategic titles in years. *
Indie games-
Darkstar One, 3.4 € : A Peltz-y game. Free-roaming space game, with favorable ratings too.
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Torchlight, 8 € : Nice diablo-like.
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Toki Tori, 2.24 € : Wonderful indie platform/puzzler. Good for kids (J, how old is yours? Might be a good choice for him/her), but also fun for adults.*
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Machinarium: 8.5 € : Probably a little too pricey to have anyone who's not into the genre to begin with try it, but it's SO GORGEOUS. Really.
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Flotilla, 5 € : Nice litle indie space exploring game. Supposed to be pretty good, with crazy stuff like talking cats and whatnot. Something for Peltz again I think.
Action-
Cryostasis, 2.5 € : underestimated shooter, flawed but inspired. Definitely recommended (at that price) *
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Chronicles of Riddick: Assault on Dark Athena, 6,8 € : Recommended. It includes both the 'new' Assault on Dark Athena and the first Riddick Game (Escape from Butcher Bay). Get it for the first and its graphical updates, but the second game is good too. Diesel does all the voice overs, the world feels 'right' and the action is visceral. One of the best movie adaption/extensions ever, if not the best. *
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Clive Barker's Jericho, 1.6 € : This game isn't supposed to be all that good, but I am a horror junkie and I have a continued hard-on for Clive Barker's (of Hellraiser fame etc) first forage into gaming, Undying. So I might get it regardless.

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Second Sight, 3.4 € : Supposed to be good, in an 'innovative gameplay ideas' kind of way. Price shouldn't stop you.
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Prince of Persia: Sands of Time, 6 € : Supposedly one of the best installements of the entire series
RPG-
The Witcher: Enhanced Edition, 5.5 € : If you like RPG's and haven't played this yet, you should buy it. One of the best RPG's of the decade. And it'll help you catch on for when the Witcher 2 arrives.*
Adventure/other-
Indigo Prophecy, 3 € : One of the best games i have ever played in the first 50% of the game...after that it goes decidely downhill in terms of 'making sense', but it's still a good game. The drop in quality towards the end just is a bummer. Also, might want to watch out, this is the American edition which has suffered some insane cuts like leaving out sex scenes and having people shower in their underwear. It makes some parts of the game hard to follow(a friend of mine noticed this a while back).
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Beyond Good and Evil, 3.5 € : A great game, of which the graphics tend to have weathered the storm of the ages pretty well. Recommended.*
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Ghost Master, 0.95 €: Fun little game, and at 0.95 € almost a crime not to try!
Casual/Pop Cap-
Plants vs. Zombies, 7 € : I can't stress enough how much fun and how addictive this game is. Price still steep-ish for giving it a try, but i'll tell you now it's worth it.*
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Bookworm Adventures Deluxe/
Bookworm Adventures 2, 7 € each : Love 'em. Funny and well-made, language fun. Totally worth it.*
So... hope you'll all give it a glance just so I can tell myself the time I put into this isn't wholly wasted.

Obviously, the selection here is slanted by what i like and know, so it's by no means a Bible. Feel free to point out your favorites too. Pro Tip: wait before buying any of these until the end of the general sales on July 4th, unless it's one of the ultracheap ones (price of a beer etc). Chances are they might drop even further on one of the single-day sales coming up. Peace!