I love his weird faces.In the most heterosexual way possible:
Just kidding, he was more than my wee gay heart could handle. Once you get over his weird faces (I still haven't TBH) he's just really sweet. He's a brilliant actor, both on stage and in front of the camera, and he is very humble and down to earth. Plus, he's really sweet with his fans, too.
But anyway, I completely agree with you, Tennant is amazing and not to mention hot. :p
He wasn't my first celebrity crush though. I think the first one was this man: