Arthur shows Doug slides to blackmail him. Doug grabs the slides and Arthur says, that's o.k. the negatives are in a locker. Slides are the original film. There would be no negatives.
When Carrie catches Doug playing slamball, notice that the ball is still bouncing on the trampoline with Doug, but when the camera goes to Carrie and back to Doug, the ball is no longer there.
While Doug and Carrie are arguing, Doug is holding a grilled cheese sandwich; when she pushes him down the stairs, at the bottom he says "Cheese still hot" even though he clearly dropped it out of reach.
While Doug is sorting through Arthur's playing cards Deacon walks in with Spence and Danny. When they enter the house Deacon is wearing a jacket. As the camera cuts off to Doug the jacket is gone. When they cut back again Deacon is wearing the jacket.
When Doug is sorting Arthur's naked ladies playing cards by cup size, he has four piles. Deacon comments that one needs its own pile and moves it to start a fifth pile, but in the next shot the card is gone.
Doug: Charlie Rose? You know this is PBS?
Carrie: We never watch anything to broaden our minds. Maybe this will give us something to talk about.
Doug: We watch TV so we don't have to talk.
Arthur: Shame on you, Carrie. I've pushed tons of people down the stairs, but damn it, I always own up to it.
Carrie: How was your physical therapy?
Doug: Not so good. I had some deep tissue work done on my inner thigh while I went to my safe place.
Arthur: (to Doug) You play the part of the lumbering imbecile quite well.
The German episode title is "Aufs Knie gefallen", meaning "On Bended Knee".
Doug complains that Wiccan wedding Carrie wants him to go to won't have any "hot witches, like Tabitha or Sabrina," referring to the main characters of Bewitched spin-off Tabitha and Sabrina, the Teenage Witch.