LOVE the Leap Frog movies.
They have helped my kids learn how to put letter sounds together to make a word and how the silent E works with a word. I hope to buy these soon, but they do have them at the library.
Click here to find them on Amazon Leap Frog
P.S. I was NOT impressed with the Circus Math one. It was okay for my 2 year old, but not GREAT. All of the other ones are awesome!