Welcome to the BBB!
I think that your nightly reading is a great foundation for your daughter (not to mention a great bonding experience). As a learning scientist, my recommentations would be to not bother with the videos at this point, and if you want to do more, just add more time and books to what you're already doing. (Additionally, I personally have not seen any peer-reviewed evidence that would support their use).
Here's a link to an abstract of a journal article you might be interested in--it talks about early reading success and the predictors of it. http://rer.sagepub.com/content/65/1/1.short
Again, welcome to the boards!
L, mommy to my one and only, super-sweet boy, G 6/08
I'm pro-big bird, and I vote.