Hi... I'm a girlfriend of a computer geek? Anyway, he helped me get set up on Ubuntu.
If you have a girlfriend, show her how to use Ubuntu. Please! Don't leave her stranded on Windoze. Sure, there's a learning curve... but if I didn't have my boyfriend to show me how to get the hang of Ubuntu then I never would have managed it on my own. Just having a computer-savvy guy who could show me the quirks... how to patiently look up fixes on the ubuntu forums rather than sitting here mad at the machine if something breaks... damn that's sexy.
Be prepared for your girlfriend being a little confused/frustrated/annoyed at little things that you just didn't even think to be confused/frustrated/annoyed at when you were setting things up on your machine... but once she gets the hang of it, she won't go back. The number of programs freely available to install immediately is fantastic.
I agree that Gimp should be set up more like Photoshop. (I hate how each image gets it's own window. What a window-hog. Also, it needs better colour support.)