Need Some Opinions

Type?

Valve Complete Pack

Price range? Genre?

What kinda games do you like? RPG? Shooters? Somethign to play with friends?

Mass Effect Series... Burnout Paradise...Borderlands...

Red Orchestra Hereos of Stalingrad :)
All Batmans :)

Snuggle Truck.

wished my friends do that , yesterday was my bday too

anyways choose valve complete pack its a good pack

Fortix

Get Mass Effect 3. It's not Steam, but it's probably the best new game (and maybe GOTY; considering the other two were GOTYs).

Just get something he plays and you coop it

Magicka Complete Pack, for both of yourselves. You both will have super amazing amounts of fun.

Dota 2

Mw3 is still a good First person shooter, but asking for a game he also has (so you can play together) would be my advice.

dungeon defenders + dlc's

borderlands GOTY

deadspace pack

burnout paradise

mass effect pack

lots more games...

id say go with Borderlands, so you are prepared for Borderlands 2 with the 96% MORE WUB-WUB

Q.U.B.E =)

Get a Tribes starter pack.

For first person shooters, you could go with the Unreal Deal pack (only $40). For platformers, you could go with Rayman Origins (yuck...Ubisoft ;/ ), Sonic Generations or even Tomb Raider maybe. And belated happy b-day Mr. brony.

AC:R, if you love these games ;)

MW3

Total War: Shogun 2 and try coop campaign with your friend. Also multiplayer mode is quite fun, but matchmaking script is kinda bugged though.

Also BLOOD PACK DLC

Also I don't understand that hype with ponies :)

How to infuriate a friend: ask for the most expensive game.

Just go with Deus Ex, nothing can go wrong :).
For a little more up to date graphics you could try http://www.moddb.com/mods/project-hdtp the High Definition Texture Pack and http://www.moddb.com/mods/deus-ex-new-vision New Vision. It just needs a more recent Prig as they eat more ressources than the game itself.

Well first i'd ask them if they have a steam game they'd like to play together.

Other than that, if you're into FPS, you could get yourself a Tribes Starter pack (you can try it first, the game is F2P after all, but you will get XP boosts and enough gold to unlock classes and weapons faster), you could also go for MW3 if thats your thing, or go for Battlefield 3 (i know, not steam).

The possibilities are endless, good luck, and happy birthday.