Sweet Seymour Skinner's Baadasssss Song

This is the show's 100½th episode.

Plot
Bart brings in Santa's Little Helper into school for show and tell. When he has to put him in the closet so he won't disturb class while they're learning, it escapes into the vents. He causes mayhem through out the school, and when Superintendent Chalmers hears about it, he fires Skinner. Bart starts to feel guilty for getting him fired. So he and Skinner try to make a plot to get him rehired.

Characters
Characters making a first appearance in this episode are:
 * Leopold
 * Luigi Risotto
 * Baby Gerald

Other character appearances:
 * Homer Simpson
 * Marge Simpson
 * Abraham Simpson
 * Bart Simpson
 * Lisa Simpson
 * Otto Mann
 * Richard
 * Sherri and Terri
 * Wendell Borton
 * Lewis
 * Santa's Little Helper
 * Edna Krabappel
 * Nelson Muntz
 * Martin Prince
 * Milhouse Van Houten
 * Groundskeeper Willie
 * Lunchlady Doris
 * Ralph Wiggum
 * Elizabeth Hoover
 * Seymour Skinner
 * Superintendent Chalmers
 * Janey Powell
 * Maggie Simpson
 * Ned Flanders
 * Jimbo Jones
 * Kearney Zzyzwicz
 * Apu Nahasapeemapetilon
 * Dolph Starbeam
 * Agnes Skinner
 * Nedward Flanders Sr.
 * Sanjay Nahasapeemapetilon

Locations

 * 742 Evergreen Terrace♥♥♥
 * Springfield Elementary School
 * Kwik-E-Mart
 * Fort Springfield

Vehicles

 * School Bus

Quotes

 * Willie: "There's nary an animal alive that out-run a greased scottsman."


 * Jimbo: [taunts, holding aloft Skinner's underwear] "We got Skinner's underpants! And there's nothing you can do about it, Mr. Ex-Principal."
 * Skinner: "That's not true. I can buy a new pair!  [checks his wallet] No I can't.  I needed those, I really did."

he goes into kitchen
 * Luigi: You miss-a your friend, huh?
 * Bart: Yeah.
 * Luigi: Let-a my cooking cheer you up-a.
 * Luigi: Get some red crap for the ugly kid-a!