It's 14.1", got an i7 processor, 4gb ram, ATI 1gb, 500gb hd, windows 7, and a bunch of other neat stuff. Now I plan to use this as my primary computer and use my older, still powerful but less so than this, desktop to run a sort-of dedicated Minecraft server and maybe I can do some other neat stuff with it. I paid a bit over $1,100 for it, but so far so good.
I'm about to run infdev on it, if it fails on me I'll rage, since the only specs that aren't identical to my desktop that runs it without issue are considerably higher. Soon afterward I'll install Steam and see how it runs Source, later on when I've got the installation CDs on hand I'll set up SWBF2.
EDIT: Infdev: ~70 FPS no fog, ~120 FPS with lowest fog. This is a bit faster than my desktop.
It's not up yet, I'm still deciding to run a vanilla server or a custom one. I want physics and all to be absolutely identical to vanilla, but I want to make it so people who immediately join can't modify stuff, etc, since it's going to be my RP server and the mods I would assign were always too busy playing to check in on the spawn prison and on other players every now and then. Right now I'm leaning toward using a vanilla for a little bit, but coding my own server, which is difficult when your knowledge of TCP packet workings is painfully limited.