Nice new first page Thovex.
As for suggestions...
Stronghold. Strategy (I know you got the first, but try the rest of them!)
Gothic. RPG
Beyond Good and Evil. Action. One of THE BEST games I know. The ending was just epic and totally unexpected. But be warned. They STILL haven't made a sequel to it 
No One Lives Forever. Action. (one of the most hillarious games ever, especially the 2nd one
)
Baldurs Gate. RPG
Neverwinter Nights. RPG
Empire Earth. Strategy.
Half Life. Action.
SWAT 3. VERY tactical Shooter. Not mindless CoD, but ACTUAL swat stuff. Games like this makes me understand how dumbed down CoD and all the other "tactical" (BAH, tactical MAH ASS) games are.
Them Park World. Strategy. BEST. SIM. EVER!
That selection is a bit old (Swat isn't but yeh) how bout, League of legends for the fans of pointy clicky fast action adrinaline gameplay, or Dead Island for a few hours of fun or a lots of hours of fun in co-op with people, also anno 1404 venice for the island building strategy lovers, and for the creative minds Minecraft, but everyone should own it to be honest :3, we also got frozen synapse, a very deep strategy turn based game, WH40k SSPEESSHHH MAINE, thats fun too, espically campaign, deugons of dredmor for those ''I want to play Rougelieks but the graphics sucks''.
I dunno, I'll add more as I find them.