I will never ever understand the sheer quantity of excellently written McShep fic with thoroughly utterly completely unlikeable Rodney McKay. He's horrid, and yet, I kept watching because I liked the other characters and I especially liked watching the other characters take him down a peg.

I suspect a good portion of fic-writing fandom identifies with McKay and that's why they find him endearing?

I'd never heard that story about Amanda Tapping. That's awesome!