(((((((((((onlymedid)))))))))))
I have trouble with the "anger releasing" thing too... I guess it's at least partly to do with past environments and role models? My family is full of emotional bottlers anyways...
I really recommend a punching bag. I need to get one of those actually!
I like ripping things. Paper, old books, old phone books... it's very cathartic sometimes. I go for a HARD fast walk/run whatever and just "burn rubber". Anger can come out through more involved exercise. Otherwise, just go outside and scream if you can. Not in public unless you want onlookers though.

I listen to "angry" or loud music sometimes too... singing along can be very relaxing.
If your T can make a safe environment, it can become easier to be angry there. It took me forever, but I finally cried in front of T, and it was *such* a relief!
Beyond that... sometimes I watch a movie that can evoke the emotion in me by watching it. So if I want to cry, I watch a sad movie... that sort of thing.
What about painting??? I love painting my anger. Lots of reds and blacks and blues... Or whatever. It doesn't even have to look like anything.
Or you can come here and vent, we do allow anger here - we just don't have an anger forum.