Hi arvi,
You can check out a previous thread on this topic:
http://forum.brillkids.com/teaching-your-child-signing-speaking-foreign-languages/baby-bit-french-and-spanish/The Babybit videos follow the Doman method precisely for math, but not for reading. The words are not retired as quickly and the same 20 words are shown for one whole week. But since I am using these to teach non-native languages, it was okay with me because I thought that Ella might not pick them up as easily and quickly as her native languages.
I really like them because it is a right brain method (and I am always looking for ways to add on more right brain activities into Ella's day since she is so left-dominant.) I also like the clear native-speaker pronunciation, and the way Ella can learn vocabulary and reading in the target language at the same time.
Hope this helps!