Logical.

Logic makes me think of Vulcans. This is an occupational hazzard of being a long term Trekkie. I do love Star Trek. Much to the dismay of my fellows, I'm more partial to The Next Generation than the Original Series, but that's only 'cause I grew up with the former. I'm a fairly avid convention goer, but Star Trek isn't my true love. That's Doctor Who, closely followed by Buffy, Trek only follows that. There's certainly nothing logical about that, but I do like logic, too.