Welcome to your Tuesday morning television briefing. I'm still laughing about last night's unintentionally hilarious episode of Gossip Girl , which in true Thanksgiving spirit, featured seemingly mortal enemies being polite to one another and everyone refusing to acknowledge the pink elephant in the room: namely Little J's ghastly "makeover." (Shudder.) Are the producers of CW's 90210 update going to do the unthinkable and kill off toothy Brenda Walsh? Fans are in an uproar about a possible rumor that Brenda (Shannen Doherty) will contract a terminal illness on her latest batch of 90210 episodes and, well, die. While some are livid about the potential storyline, Jason Priestley seemed open to the possibility of Brenda dying on-screen. "This is all news to me, but this is fantastic," Priestly told Access Hollywood. "That is going to be awesome. No they haven't given me anything yet. I don't even know if the episode is written yet, but I