Recap / The Simpsons S 14 E 6 The Great Louse Detective
Someone's out to kill Homer, after Homer gets locked into a sauna by a hooded man — and only Sideshow Bob can figure out who that is.
Art Shift: As of this episode, the show fully switched over to digital paint. Like the previous two instances (Season 7's "Radioactive Man" and Season 12's "Tennis the Menace"), it wasn't well-received, since at the time of this episode's airing in 2002, digital ink was not very common and traditional cel animation wouldn't become defunct until two years later.note To say nothing about the shift to HD a few seasons later
Call Back: Most of Homer's past enemies were from previous episodes, including the son of deceased nuclear plant worker, Frank Grimes.
Comically Missing the Point: As Moe, Carl, and Lenny give Sideshow Bob advice on how to kill Bart, Homer shuts them up—not because they were threatening his son, but so Bob can think.
Dartboard of Hate: Sideshow Bob plays darts at Moe's, fashioning a likeness of Bart's face out of the darts.
Foreshadowing: There are various hints throughout the episode that indicate who's trying to kill Homer, as Sideshow Bob notices.
When Bart examines the spa invitation sent to Homer by the killer, he discovers a black smudge on it.
When the killer traps Homer in the sauna room, he uses an enormous wrench.
When the killer tries to shoot Homer and escapes, he uses a tow truck.
Human Cannonball: Bob gets into the cannon on one of the Mardi Gras floats and lights the fuse in order to launch himself into the air and save Homer from getting Impaled with Extreme Prejudice on one of the swordfish in the swordfish museum.
Also a Continuity Nod; Bob has plenty of experience getting shot out of cannons, as revealed way back in "Krusty Gets Busted".
Jerkass: Homer's friends at the bar actually give Sideshow Bob advice and encouragement to kill Bart.
Sauna of Death: First attempt on Homer's life. He was actually already in danger by being in the sauna at all because of his obesity and heart problems. The sauna controls helpfully included the setting "murder".
Unusually Uninteresting Sight: Lampshaded, when various people show up to attack the "Homer" dummy Sideshow Bob rigs to lure the killer. Including Homer himself.
Homer: Once I kill you, everyone will think I'm the real Homer. Hahahahaha!
Sideshow Bob:[turning to the others] None of this seems odd to you?
Why Don't You Just Shoot Him?: At Moe's, the regulars mock Sideshow Bob's inability to kill Bart, with Lenny suggesting he "just come up behind him with a knife and slit his throat real quick-like".
Brick Joke: At the end of the episode, confronting Bart in his room, Bob takes out a knife and says he's "going to take some advice that was given to me by Lenny, and kill you without delay". (Only to discover he can't go through with it, having grown accustomed to Bart's face.)