Adam Pascal- One of the most powerful and emotion filled voices I've ever heard. Sends chills down my spine and you can just feel the passion radiating from his voice.
Daphne Rubin Vega- She has such a unique, individual voice and she just shows emotion very well.
Cheno (as someone else said, limited in emotions she can show but the ones she can show, she does very VERY well)
Anthony Rapp (same as said about Cheno but also because I've never really heard him express a kind of angry/vicious emotion)
(ones that I also feel go under this category but I cant come up with a summary for :-P)
Sutton Foster
Lea Solanga
I wanted to get something that an "ex"-junkie like him would really appreciate and cherish....it's a brick of heroin shaped like a heart.
-Scrubs