episodes in order of appearance:

season 6 episode 9 sacred couch
season 8 episode 14 the date escape
season 1 episode 5 hamburger dinner theater
season 7 episode 13 the grand mama-pest hotel
season 1 episode 2 crawl space
season 11 episode 17 fingers-loose
season 1 episode 1 human flesh
season 13 episode 21 mother author laser pointer
season 4 episode 21 wharf horse (or how bob saves/destroys the town part one)
season 13 episode 15 the show (and tell) must go on
season 12 episode 10 gene's christmas break
season 10 episode 12 a fish called tina
season 4 episode 5 turkey in a can
season 5 episode 17 itty bitty ditty committee
season 5 episode 6 father of the bob
season 3 episode 10 mother daughter laser razor
season 11 episode 12 die card or card trying