homer simpson this is your wife

So, I have this thing I do whenever someone tells me a "knock knock" joke. Instead of saying "who's there?" I'll say something like "come in" or "hang on, I'll get it." It's worth it just to see the look of confusion on the person's face. Then last night I see this exchange between Marge and Charles, a character played by the episode's guest writer, Ricky Gervais:

Charles: Would you like to hear a joke?

Marge: As long as it's not a "knock knock" joke. I always ruin them by saying, "Come in!"

Well, we've known for awhile now that Ricky Gervais, The Office creator and revered funnymen on both sides of the pond, would be penning an episode of The Simpsons. What we didn't know, however, was when the show would air. Well, it looks like March 26 is the magic day. In Gervais' episode, titled "Homer Simpson, This is Your Wife" Homer and Marge take part in a "wife swap" reality show. Gervais will play Charles, one of the contestants who falls in love with Marge. Someone can correct me if I'm wrong, but I believe this is the first time an outside party has been allowed to write an episode. It will be interesting to see what Gervais brings to the episode, and how his own humor will blend with that of the show. Methinks they'll go together like peanut butter and chocolate.