Yesterday Allison decided she was tired of holding still.  She began rolling from back to front.  And then continued front to back.  And so on.  I guess it's time to pick up all the legos from the floor.  If that wasn't enough she also scoots forward by grabbing/pulling the carpet and kicking her legs.  Not very far, but enough to get to a close toy.  She also will lift up one arm and then kind of lurch toward that side to get some distance.  Trouble! :)