A lot of fun
I played SWTOR this past weekend, and enjoyed it quite a lot.
The combat flowed nicely, the quests were fairly predictable (as were most of the plotlines), but it all came together very well.
The feeling was that it was a coherent universe, with various factions that had actual causes and reactions, not just "oh, yeah, here's a random monster or thing to do." Some of the NPCs had real personalities, like the fairly-awful reporter you run into in one war zone (which was when I wanted the option to "smack her in the head").
A lot of the game won't really "work" until the servers have been up for a couple of weeks. The auction houses were mostly empty because people were too busy leveling and exploring to buy or sell, and most people weren't using the social aspects of the game - it really cries out for active guildmates to play with.
But - this is the important bit - it's Star Wars.
When I created my first character, and The Titles came up (with The Music), telling me about my role in the universe... it was May of 1977, sitting in that theater all over again.