I've finished KOTOR 2 again, and hunger for something epic in scope. I don't care if it's strategy, fps, or RPG.
I've already finished:
KOTOR 1+2
Baldur's Gate series
Arcanum
Deus Ex
Rome
Medieval
Shogun
DoW
HL2.

Any suggestions? The only real requirements I have are that it be reasonably new (think FAKK2->now)

Hmm... There is a game that just migh fit your profile, as you did say you don't care about the genre. Try X2: The Threat. Or wait for X3. Or get Battle for Middle Earth, that should help pass the time(not a lot of time, gets old fast). You can get Act of War, from what I played at a friend's house, it's great!

I assume you have GTA:SA, if not, get it ;)
You can also try:
*Chronicles of Riddick:Escape from butcher bay
*Splinter Cell: 1,2&3 (all look great, and Chaos theory is one of the best games I have ever played)
*Command & Conquer:Generals
*Guild Wars
*Planescape:Torment

If you have an Xbox, there are heaps of games that you would like (which im sure you know if you ahve an Xbox) such as Jade empire ;)

Neverwinter Nights, maybe? Jade Empire, as well.

ST:Battlefront

StarWars Battlefront

I assume you want something with a lot of action by as many units on the map as possible ? In that case, and if you liked RTW, you should check out this or Cossacks 2- the Napoleonic Wars, those should meet your needs.

If you're looking for some action in a fairly new RPG, you should check out Dungeon Lords.

Get Empire Earth 2. The AI is simply amazing.

Get Guild Wars. Human IQ is simply amazing.

Epic? :D

Spellforce plus its' expansions. ;)