Being angry is human so Ts can be/get angry at their clients. However, I can't think of any situation in therapy where it would be beneficial for the client if the T would act upon it (yelling and all that stuff).

BTW I have tried to make my T angry at me. Have pushed his buttons really hard and was pretty nasty just to see him loosing it. Never have I succeed (thank God). When asked my T admitted he was angry at first but than he immediately started to think why I was acting that way. Typical behavior for a T...