Thanks for the replies. As far as time frame, 10 hours or less would be ideal- I am a slow and thorough gamer- the kind that likes to explore in FPS as opposed to just blasting my way through.
With respect to my backlog, well... they say the first step to curing an addiction is admitting it... so, I have probably 800 or so in my backlog (I like to think of myself more as a collector- at least that's what I tell myself to justify such an abomination). I probably have more than 100 games still sealed in their boxes.

So a posting of my backlog isn't very practical (although being the compulsive person that I am, my games and manuals are alphabetized. Anyway, that is a topic for another post. (although, I could just post the A's or the B's or something

).
I did finish Max Payne, but that still took me about two weeks ( I would estimate 20 hours). I am currently playing the original Freedom Force and I love it, but judging from Kasey Chang's FAQ, I have a long way to go.
I like the idea of the Star Trek Voyager games, that may be a good place to start (I have both of those). I also have both the Splinter Cell games, I didn't realize that they were relatively short as well. In contrast though, I finished Call of Duty, but my perception was not of it being short. It took me quite some time to get through that (perhaps I am just a terrible gamer

. I read people posting stories of blazing through FPS titles and I sometimes wonder if I am playing the same games).
Any recommendations for brief non-FPS games? I'm not choosy about genre, it can be strategy, rpg, adventure, etc.
Oh, and, thanks for the suggestions thus far.