If you're into FPS get Battlefront 2 (this is more on the multiplayer side just to note). Or if you like the tactical singleplayer FPS, get Republic Commando. RPGs: Get KOTOR for the Xbox (PC is quite buggy, but if you only have PC go ahead and buy.) Lightsaber Games: Jedi Knight 2 Jedi Outcast for PC or Jedi Knight Jedi Achademy for PC. RTS: Empire at War
That best Of Star Wars looks like the shit! I think you should wait for that to come out!
Or if you don't mind paying 15 bucks a month you might want to try Star Wars Galaxies. I don't know if you've heard of it before but it's a MMORPG.(Massivlely Multiplayer Online Role Playing Game)
I have heard that it was a great game, That the game creators later ruined because of extremly bad changes and patches.