I buy so many DVDs because I myself am easily bored and look forward to watching something else. And unfortunately the DVDs that are most GD-like, Tweedlewink, babybit, baby brain and Wink to Learn, bore her... she wont watch them. So she isnt learning much from them.
Try putting babybit on the computer if you haven't already- that's working better for my kids than on the big screen TV-