It's possible that the scene at the end takes place a bit after the scene before, but it seems to be the same time. If that is the case, they have Bobby outside playing with Joseph and then suddenly he is in the bathroom in his pajamas. Also Luanne was outside mowing and then shows up right on cue.
In "Pilot", Hank puts bacon grease on his sandwich, but in this episode he tells Dale he won't eat bacon grease.
The camera is pointed at Hank's right eye, but the screen shows his left eye.
At the end of the episode, Bobby is wearing his pajamas. When Hank comes out of the bathroom he is wearing his normal clothes again. Then when Bobby hugs him he is wearing his pajamas once more.
When Hank unplugs the TV, there is one shot you can still see it glowing like its on.
(Hank has been directed to take his pants off so the doctor can do a probe. He is alone in the room with Peggy, and quite clearly uncomfortable)
Hank: (facing the wall) Look at that, Peg. Cotton balls. White ones. Huh. A whole jar. How many do you think are in there? I bet 30. Yep. 30.
Dr. Morley: Hi, I'm Dr. Morley. So, you're suffering from consumption?
Dr. Morley: Oh, constipation. Well, that's quite a different matter
*in Peggy's dream where Hank has died from being constipated)
Bill: He looks like an angel; a dead angel.
Peggy: Would that be good for a man who's constipated?
Peggy: Well, I didn't say it was you.
Clerk: Is this for your husband?
Peggy: Hi Luanne. How did the big shampooing final go?
Luanne: Well, I passed the lather part okay, but I failed rinse, and then I failed repeat too, because that includes rinse, which I don't think is very fair.
Dale: Hey, Peggy. Is Hank around?
Peggy: Sorry, but Hank is having his bathroom time right now.
Doctor: If you could stretch your father's intestine out, it would go around the world.
Hank: Wait a second. A piece of steak would have to shoot through at the speed of sound.
Hank: I would rather die with a burger in my colon than live eating faux-fu.
Hank: (in the health food store) Do you have anything that tastes good?
Health Food Store Owner: Uhh...no.
On the Season 1 DVD this episode and the next one, "Westie Side Story" are reversed, because the DVD was done in production order.
Co-creator Greg Daniels has named this as his favorite episode.
Hank asks if the guy on the TV is Howard Stern, because he considered him vulgar, and that is what Howard Stern is known for.