Welp, I love all of them, but I do really like Ain't Got Rhythm and the Perry the platypus theme song, and The Gordian Knot, and Gitchee Gitchee Goo, and the Doofenschmirtz jingle, and Squirrels In My Pants, and Backyard Beach, and I'm Me, and Busted, and E.V.I.L boys, and There's a Platypus controlling me, and My Goody Two Shoes Brother, and... I LIKE THEM ALL!!!!!!!