GURPS Traveller
I picked up GURPS Traveller: Interstellar Wars yesterday. My impression from the first read-through is "Wow!" Lots of great background and setting for a Traveller era that I always thought was pretty interesting. And a fai amount of crunchy stuff that I really like is in the book as well.
If only they would have added a system for merging with the old GDW Imperium game.
Of course, I could always work up something.
As if I didn't have enough on my plate already.