My friend Kirsten D'Aurelio runs a company called Voicescape. She is a trained actress and uses theater techniques to help people, well talk better (and give kick-ass presentations). She helps you improve on things that are highly important to nearly any career. Her web site is here.
She told me that she has a couple of slots remaining for the upcoming Tuesday evening presentation skills course, which begins next Tuesday, March 2. It's a 5-week course that runs throughout the month of March.