McKay is one of those characters that I just don't want to see in a ship with anyone. I want him perpetually on the sidelines and bitching at everyone else.

But McKay needs love! 'Cause if he can find love, then maybe it could even happen to meeeeeeeee! ;-)

But canon-wise it's not even a remotely serious possibility.

There's almost something comforting about that kind of ship, you know what I mean? If you know it's never going to happen, you don't have to get too worked up over it. When Buffy and Spike didn't end up together forever the way I had wanted, I was pissed, because it seemed so likely, for so long, and when it didn't happen, I felt like something had been taken away from me. There's a comfort in not being able to expect too much. In theory, anyway. ;-)

That said, I don't see Sheppard/Weir at all. But we all tend to see what we want to see...