An excellent show for small children and parents.
My son loves the bright colours, music and easily distinguishable characters. As an adult the stories are genuinely funny and the pop culture references are great, e.g. Apocalypse now reference in the Scarecrow badge episode.
Some episode are a bit more hit and miss than others, the ones where they meet outside characters are usually the best. The Panda that sounds like an extra in Eastenders, the greaser mice from the 1950s and the military ants all add variety and extra comedy value.
The characters all speak in simple and correct English, which is really important to me as a parent.