My little 2 year old loved watching Thomas. Whenever the TV was on he begged to watch the DVD. The stories were short enough to keep his attention and there were good moral values taught in an entertaining way.
I use to love this so much when I was a little kid. My favorite episodes are the ones that are the original ones that were narrated by Ringo Starr. When they started to make the newest ones it was starting to be bad. If you are interested in watching Thomas the Tank Engine watch the ones with Ringo Starr.