List of title screen gags

When The Simpsons opening sequence was reanimated for its conversion to high definition in 2009, initially, during the screen showing the title, only one gag was used: a three-eyed crow would fly by it. Starting with the Season 21 episode "Bart Gets a "Z", the gag would become a changing gag for each episode just like the billboard gags, the chalkboard gags, and the couch gags.

Season 21

#	Gag	Episode Name	Code
2	Sharry Bobbins flies across the screen with her magic umbrella	Bart Gets a "Z"	LABF15
3	A stork flies by carrying Maggie	The Great Wife Hope	LABF16
4	None	Treehouse of Horror XX	LABF14
5	Homer flies by lying on a lawn chair with balloons	The Devil Wears Nada	LABF17
6	Repeat of gag from LABF15	Pranks and Greens	LABF18
7	Repeat of gag from LABF16	Rednecks and Broomsticks	LABF19
8	Repeat of gag from LABF17	O Brother, Where Bart Thou?	MABF01
9	Instead of the usual music of the choir singing "The Simpsons," the "Miss Gulch/Wicked Witch of the West" theme from the 1939 film The Wizard of Oz is heard as Agnes Skinner rides her bicycle across the title	Thursdays with Abie	MABF02
10	Ralph flies by hanging onto a kite	Once Upon a Time in Springfield	LABF20
11	Plopper web slings across the screen a la Spider-Man	Million Dollar Maybe	MABF03
12	The Simpsons fly by riding in Chitty Chitty Bang Bang	Boy Meets Curl	MABF05
13	Repeat of gag from MABF02, only this time the choir singing "The Simpsons" is heard as well as the "Miss Gulch/Wicked Witch of the West" theme	The Color Yellow	MABF06
14	Repeat of first HD gag	Postcards from the Wedge	MABF04
15	Radioactive Man and Fallout Boy fly across	Stealing First Base	MABF07
16	Repeat of gag from LABF20	The Greatest Story Ever D'ohed	MABF10
17	Captain Lance Murdock drives by on his motorbike and shouts "Yeehaw!"	American History X-cellent	MABF08
18	Kang and Kodos fly by in a flying saucer laughing	Chief of Hearts	MABF09
19	The title crashes into a Fox network satellite	The Squirt and the Whale	MABF14
20	TBA	To Surveil With Love	MABF12