S.B.
I am a certified elementary and Special Education teacher and would highly reccommend the Leap Frog videos. They are called "The Letter Factory," "The Talking Words Factory," and "The Code Word Caper." My son is 2 1/2 and knows the sounds of most of the letters. They sell them at Target and are about $10. Any of the "Hooked on Phonics" videos are good, as well.