List of billboard gags

Beginning in 2009, with the newly animated high definition opening sequence, with new animation came some new running gags that would change every week. One of these gags was before we see Bart writing something on the chalkboard, we would see a building in front of Springfield Elementary School with a billboard on top of it that would change every episode. However, the billboard could also not be seen when the shorter opening sequence is show.

List

Season 20

#	Text	Character Shown	Episode Name
10	Krusty: Now Doing Funerals	Krusty	Take My Life, Please
11	Lost Child. No Reward.	Milhouse	How the Test Was Won
12	Moe's Tavern: Now with Electricity	Moe Szyslak	No Loan Again, Naturally
13	None	None	Gone Maggie Gone
14	Pay for Septuplets, Get Octuplets Free!	Dr. Nick	In the Name of the Grandfather
15	Support Your Local Bullies	Kearney, Dolph, and Jimbo	Wedding for Disaster
16	None	None	Eeny Teeny Maya Moe
17	Luigi's: Home of the Breadstick	Luigi	The Good, the Sad, and the Drugly
18	Principal Skinner: I Paint Houses	Seymour Skinner	Father Knows Worst
19	None	None	Waverly Hills 9-0-2-1-D'oh
20	None	None	Four Great Women and a Manicure
21	Spider Pig: The Musical: Music by U2 and Alf Clausen	Plopper	Coming to Homerica

Season 21

#	Text	Character Shown	Episode Title
1	If I Kill You, You Don't Pay — Dr. Nick Riviera	Dr. Nick	Homer the Whopper
2	Kwik-E-Mart: Porno Now on Lower Shelf	Apu	Bart Gets a "Z"
3	The Leftorium: Next Right	Ned Flanders	The Great Wife Hope
4	None	None	Treehouse of Horror XX
5	Don't Face This Christmas Sober	Duffman	The Devil Wears Nada
6	Dr. Otto's "Wellness" Clinic	Otto Mann	Pranks and Greens
7	Springfield Retirement Castle	Grampa (saying "Get me outta here!"	Rednecks and Broomsticks
8	none	none	O Brother, Where Bart Thou?
9	none	none	Thursdays with Abie
10	The Fox Network: Still Sucking After 20 Years	Maggie	Once Upon a Time in Springfield
11	None	None	Million Dollar Maybe
12	none	none	Boy Meets Curl