They reached their peak at Battlefront II in 2005 and haven't come anywhere near since. None of the Star Wars titles since then had any longevity or replay value (I'm looking at you, Force Unleashed series). You couldn't pay me to play TOR, I'm just not a MMO gamer.
Battlefront II was a lot of fun, really enjoyed the space battles and boarding enemy ships and causing all kinds of destruction from within their hangars. I always liked to play with the heroes turned off, I always liked the idea of just being a simple soldier in the Star Wars universe. Part of the appeal of Dark Forces to me was you were a mercenary with blasters, of course they couldn't leave that alone and had to give Kyle force abilities.