list of epic strategy games IMO
Civilization
StarCraft
list of great strategy games IMO
Call to Power (great for its time)
Supreme Commander (1 and 2 but for different reasons IMO it borderlines the epic category but it hasn't been out long enough for me to call it such)
WarCraft I (yea, i'm not into the WarCraft series but the first one was great, for its time)
Chess (yea yea, not what you would think)
Shogi (great game if you know how to play)
Go (Ancient game, but its very deep if you get into it)
Good strategy games IMO
AOE (it was very involved for when it came out)
the last three are board games, but you have to admit great strategy games nonetheless, i left out command and conquer but i admit it is good, i just don't like it. i leave out WarCraft 2,3 because they were bad in their own ways (exactly the same units per race, and heros respectively). I've also heard company of hero's is good but I've not played it. warhammer 40k i didn't like the first one, I've yet to play the second.
I might have missed a few games but it is probably because I've yet to play them.