For me, the best Spongebob episode is Frankendoodle. While Rock Bottom has the creepy ambiance and just plain surreal feel to it, Frankendoodle is just plain fun. The stand-out moment is right after Spongebob erases the doodle, lifts the "magic pencil" above his head, and bellows, "I AM SPONGEBOB, DESTROYER OF EVIIIIIIILLL!" Cracks me up every time.

And who can forget Doodlebob's "last words"?

("Could you repeat that?" "Nyengh-nugh-huh, habba-babba-babba.")