Re: Spock Lying
The myth of Vulcans not being able to lie went conclusively out of the window with Tuvok, a full Vulcan. Since he did infiltrate the Maquis. I'd imagine lying comes with the job.
I'd say Vulcans can indeed lie with the best of them. Hell, they probably are one of the best liars in the galaxy, since they have so much more control over their emotions. That probably eliminates all those little "tells" that we humans have.
"God runs electromagnetics by wave theory on Monday, Wednesday, and Friday,
and the Devil runs them by quantum theory on Tuesday, Thursday, and
-Sir William Bragg