The pillow disappears and reappears between shots while Gene is on the bed. Interestingly, the wrinkles his feet make in the pillow can still be seen floating in midair in the shot where the pillow itself is missing.
In the opening intro the store next to Bob's is called "Pro-pain Accessories" and the exterminator is "Dale's Dead-Bug." Hank Hill, from the show "King of the Hill", sells propane and propane accessories and his neighbor, Dale Gribble, owns Dale's Dead-Bug. Jim Dauterive, one of the show's creator/writer was also a writer/producer for "King of the Hill."