DVD in the clearance isle, at our local Walmart, so I decided to give it a try.
Within a few days of my children watching the video, several times a day, they both knew all their letters and the sounds that go with them. Grant it, my son knew a lot of them already because he was 4. However, my daughter age 2, only knew a few of her letters and no sounds at that point. They would both sing the catchy little song that goes along with the video a million times a day rehearsing their new found knowledge.
If you are in the market for something that aides you in teaching your child their letters and the sounds that each letter makes, I highly recommend this DVD.
As a side note to parents, you may want to invest in some headphones because it can get a little annoying ;) I was willing to be annoyed, as long as my kids were learning something valuable.