From time to time I have "tuned" in to Madcow's program. I have NEVER heard Madcow do anything other than rant and rave, and I have NEVER heard her present substance on any issue.
She was on meet the press to talk about her book a few months ago. She seemed much more reasonable and thoughtful than I’d seen her either on her show (admittedly an infrequent occurrence) or when she has been on panel discussions.
I think she knows she’s playing a role when on MSNBC or when she’s part of the MTP panel, and plays up to that.