This last week I created a few Traveller* characters, mainly out of boredom and restlessness.
I find that making a Traveller character can be sort of an epic experience; when you finish making the character, you feel like you've played an entire campaign, particularly if you like to fill in the details in your mind the way I do. Traveller characters have a tendency to feel very....grizzled.
"Kid, after 12 years in an Imeperial Ground Assault Unit, you learn a thing or two about trust..."
I think other bloggers have mentioned this, but the game stands in stark contrast to most editions of D&D/AD&D, where you start out as a 16-20 year old who can cast one spell per day, or has a about a 25-30% chance of successfully hitting a guy in chain mail+shield in melee combat. (Or has a 5% chance to hide in shadows, etc, etc.)
I also have to admit that I have little to no interest in the Third Imperium setting, but then again I never really dug on Greyhawk or Forgotten Realms, either. Making up your own setting is a major part of the fun of DMing.
*Mongoose Pocket Edition. Don't hate.