I recently downloaded season two of 30 Rock and was treated to the hilarious episode titled “Greenzo.” Man, that Alec Baldwin/Tina Fey combination is something else. They legitimately make me laugh out loud. The guest star in this episode, however, makes me want to give myself a spinal tap. Similarly, I downloaded the first two episodes of the current season of Scrubs. Again, the cast is generally pretty brilliant and again, the guest star gives me chills from being so unfunny. These two guest “stars” have one thing in common (besides the ability to make me wretch in front of my TV). They were both main characters on the disturbingly popular Friends.