I think she might actually be using some signs by the end of the year. We also have 3 Signing Time DVDs but they are longer and more complex, with less music, so we haven't watched them much yet. I think they'll be good when she's older. (Hopkins is weird in ST. I miss the cute Hopkins from BST. He's Bit's favorite part.)
I'm thinking about getting the board books for sign review b/c I'm not a flash card person. http://www.signingtime.com/index.php?cPath=29
We've been showing Bit the Baby Signing Time dvds for about 4-5 months now. She absolutely loves them. They are the only videos/show she really gets excited about. When I tell her I'm going to put it on she starts swinging her arm out and back from her chest...I think that's a "proto" sign...she does it during the theme song (maybe it's her version of baby or signing). She's starting to do more with her hands and she learned to say "ba" (ball) from vol. 2. She says it all the time.