Rockin' and Rollin'

Ava has really started to talk!  She will lay on the floor or sit in her swing and just carry on a conversation with herself.  She also "sings".  At least I think that is what she is doing.  Her favorite song right now is the ABC's.  Whenever I start to sing it, she just smiles and starts laughing and talking and singing.  The only problem is that when I get the camera out she stops because she is focused on the camera!  I've got a video though that shows her singing along a little.  Ava also rolled over from her tummy to her back for the first time today!  Very exciting.  She's been busy all day just "rocking, and rolling, and what-not."  Anyone know what movie that line is from??