Lexapro has helped me tremedously... not really with anger (didn't have any anger issues) but with anxiety and getting worked up with unnecessary worry. I just bought some biofeedback software, which I hope will be my 'solution' to calming myself down once I wean myself off the Lexapro. Have you ever tried biofeedback? I hope it works! Here is a link to the product I bought:

http://www.wilddivine.com/