There's the one I was thinking about where Wilson's been on antidepressants since college, or even med school, and was still very secretive about taking them, but House figured it out very soon after meeting him. And later, after House starts to take pain medication, Wilson comes around to the necessity of his own pills. I'd love to write this for all the nifty parallels and comments that could be made about needed medications for different problems, but I don't feel I'd be able to do Wilson's depression properly.

There's another one where Wilson gets chicken pox because he was never exposed to the disease as a kid, and House has to take care of him, and it's silly and fun without being sappy or sentimental.