Episode 4507 - The Justice League of Letters

==Story==
Ernie can't find his rare Letter X, so a band of superheroes show up to help him seek it. They search all over the Street until they found out that it was in his pocket all long.
==Segments==
*Cartoon: The Ladybug's Picnic
*Muppets : Number Guy (Parody of Family Guy)
*Muppets : Zoe teaches Baby Bear about the letter M
*Cartoon : Me and My M 
*Celebrity : Fred Figglehorn demonstrates words that start with F.
*Film : Various things that start with F.
*Muppets : Honk Around the Clock
*Muppets : Elmo Style (parody of Gangnam Style)
*Credits