The racial episode (SPOILERS)
Season 5 episode 5 "No Good Deed" is hilarious. As a Brit i didn't understand the inappropriateness of that episode at first due to what happened with Hurricane Katrina. I realise that people especially people who were affected by the hurricane would find this episode offensive.
But the white lady Barbara-Jean acting stereotypically black should be separate from the inappropriateness of the episode, her "acting black" had nothing to do with Hurricane Katrina, it was to do with her personal definition of an African-American.
I don't believe that this episode is racist, the character Barbara-Jean was unintentionally ignorant, that was all, she was hilarious though to the point that it's cringeworthy.