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The Simpsons: 22x21
500 Keys
After finding the keys to every door in Springfield, Lisa finds a hidden room beneath the elementary school.
22 - 1Elementary School Musical Sep. 26, 2010
22 - 2Loan-a-Lisa Oct. 03, 2010
22 - 3MoneyBART Oct. 10, 2010
22 - 4Treehouse of Horror XXI Nov. 07, 2010
22 - 5Lisa Simpson, This Isn't Your Life Nov. 14, 2010
22 - 6The Fool Monty Nov. 21, 2010
22 - 7How Munched Is That Birdie in the Window? Nov. 28, 2010
22 - 8The Fight Before Christmas Dec. 05, 2010
22 - 9Donnie Fatso Dec. 12, 2010
22 - 10Moms I'd Like to Forget Jan. 09, 2011
22 - 11Flaming Moe Jan. 16, 2011
22 - 12Homer the Father Jan. 23, 2011
22 - 13The Blue and the Gray Feb. 13, 2011
22 - 14Angry Dad: The Movie Feb. 20, 2011
22 - 15The Scorpion's Tale Mar. 06, 2011
22 - 16A Midsummer's Nice Dream Mar. 13, 2011
22 - 17Love Is a Many Strangled Thing Mar. 27, 2011
22 - 18The Great Simpsina Apr. 10, 2011
22 - 19The Real Housewives of Fat Tony May. 01, 2011
22 - 20Homer Scissorhands May. 08, 2011
22 - 21500 Keys May. 15, 2011
22 - 22The Ned-liest Catch May. 22, 2011