I would definitely have to say my favorite race are the Vulcans, followed by Andorians. I'm not really sure I've read any heavily Vulcan centric books though. Any recommendations?
The Vulcan's Noun
books by Susan Shwartz and Josepha Sherman:
-- Vulcan's Forge
-- Vulcan's Heart
-- Vulcan's Soul, book 1: Exodus
-- Vulcan's Soul, book 2: Exiles
-- Vulcan's Soul, book 3: Epiphany
by A.C. Crispin is a great book on one of my favourite characters.
I remember I really enjoyed IDIC Epidemic
and The Vulcan Academy Murders
by Jean Lorrah.