#2...

Lately, after saying "Live Long And Prosper," he gives you a nasty look
and mumbles something that sounds a lot like "except you, you bastard."

He uses the other Vulcan salute. The one with only one finger.

Keeps making "I've got my eyes on you" sign at you behind Kirk's back.

The first thing I thought was the twitch in the eyebrows, but I also thought that because he was in a prime time show, some of his decisions that seemed perfectly logical, had to remain on the cutting room floor, or people would be confused - "That doesn't sound Logical" Well you had to be there. I was going to put a smiley, but I know Spock doesn't believe in Vulcan laughing. (Giggling maybe, but he knows how to do it under his breath.)