I had a different take on the Carl and Sean scene. I felt there was some parallelism to Fiona knocking a few minutes later. There didn't seem to be any antagonism on Sean's part. He asked if Carl needed anything, was hungry, etc. Was he a dick for not immediately inviting Carl into the apartment when two little…

Agreed - he and Fiona work well together in a "chaotic" way. This is at least a fairly honest and fairly mature relationship.

Both Mulroney and Alexander are listed as Special Guest Stars at the end of each show.