Grownup Geek
I now have, hanging on my living room wall, a beautifully framed set of original artwork from the mad science web comic Girl Genius by Phil and Kaja Foglio. This feels both incredibly geeky (It's a web comic. With Mad Science! And Death Rays!) and incredibly grown up (It's original art, that I paid a lot of money to get framed). (Not to mention I have a living room wall to hang it upon.) I have to say, I really like the juxtaposition of the two.