Brooke has been trying to climb on stuff for months. You name it, she will attempt to get up on it. The majority of her attempts are unsuccessful thus far ... she just cant seem to figure it out. Yesterday she finally got herself up on the couch, but seems to be unaware of her accomplishment. She is probably so used to us giving her a little boost she assumes that was how she got up there :) Today she has made several attempts, each one of them unsuccessful.
I doubt she is a one-hit-wonder. I fully expect Brooke to be all over the furniture within the next week or so!