Stronghold series FTW.
AoE series not my top but kinda good games more or less.
Sim City series totally awesome, even tho didn't play the last one yet.
Civilization series extremely addictive. (Currently extremely cheap on humble bundle.)
C&C,Warcraft,Port Royale,Theme Hospital, Rollercoaster tycoon,Magicka,Lemonade Tycoon,Toilet Tycoon,Las Vegas make it big, Restaurant Tycoon etc etc i could go on forever.
Even tho i got a special place in my heart for consoles since i grown up with with them, gotta say that PC is the ultimate gaming machine for strategy lovers.