TV Critic’s Choice for Thursday: Gossip girl

Kathy Griffin doesn’t really tell jokes anymore. She just dishes on celebrity encounters, but she does it with such exuberance that we wouldn’t dream of missing any of her stand-up specials, the latest being “Kathy Griffin: Straight to Hell” (8 p.m., Bravo). This time out, she gives the dirt on her Emmy Awards speech and her encounter with Martha Stewart. Fourth time around I consider myself …