Greg & Robb got me a signed copy of the first volume of Phil & Kaja Foglio's Girl Genius at Comic-Con. I've had it in my bookmarks for a long time, but it's one of those that I haven't read in ages and ages.
Or hadn't, rather, because after reading through my paper copy, I promptly hopped online and have been catching up on the whole thing (in a rationed-to-last-longer kind of way) and It. Is. AWESOME!
And oh MAN would it make an excellent RPG. (Oh, hey, looky there!)
And if that's not enough of a time-sink for ya, there's also the computer version of Race For the Galaxy... Did I mention that it's officially sanctioned and totally free? And plays quite well?