My 4 year old son received your Twenty Trucks video for Christmas and it was a huge hit! The entire family sings along and shouts out the truck names. Great fun! I am also thrilled that the Twenty Trucks video has helped clear-up any confusions my 4 year old had with numbers from 1-20. Matthew has made a list of 20 more trucks in anticipation of what you might put on the new video. My 2 year old son is loving the video as well. He is shouting out numbers and truck names almost as quickly as his older brother!