A detective exercises on his day off.
Jason Bateman explains the word Comfort.
Elmo sings a song about jackets.
Kermit covers Jack and Jill.
Jon Stewart introduces the word Practice.
Grover tries to teach kids about school.
Colin Farrell investigates.
Elmo and Rev Run sing about hopping.
A Sneak Peek at "True Mud."
Kids talk about games.
Ernie and Cookie Monster both want a cookie.
Will.I.am sings What I Am.
A Sneak Peak at The Closer.
Kara Dioguardi talks about pasta.
Oprah Winfrey voices the letter O.
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