What's new and/or interesting on TV this week. Samantha Who? (Mon, 9:30PM-10PM, ABC) - Christina Applegate's new show (this is the pilot) features her as a woman who wakes up from a coma with amnesia and discovers that the person she used to be was a bitch, a cheater, an alcoholic, and had no friends. We remember a little movie called Regarding Henry that had a similar premise, but starred Harrison Ford instead of Applegate.......