when fandoms collide

So I've been watching "Secret Diary of a Call Girl," and there was this actor on it who was really familiar, but I couldn't place him. Then all of a sudden it came to me, and it was "Oh my god, that's Rani's father!!! Rani's father is having sex with Rose!!!!! MY EYES! MY EYES!!!!!"

Then I saw the episode with Matt Smith, but somehow that wasn't weird at all. I had already known that he was in the show, so that might be the explanation, but somehow I think it's that after unexpectedly coming across Sex Client Haresh, nothing can faze me anymore.