My kids' (aged 4 and 7) favorites are Itsy Bitsy Spider, BINGO, and Down by the Bay. In Down by the Bay they sing the first part and I sing the ' have you ever seen a ....' part because it's too fast for them. The other two were hits right off the bat, maybe because they are especially easy to learn and because of the hand movements. Oh yes, another song they love is the knick knack song (I don't think it's actually called that).The one that goes, "this old man , he played one, he played knick knack on my thumb." I also find they like most Raffi songs. I especially like one song of his that speaks of nationalities although I can't remember exactly how it goes at the moment...I'll get back to you on that!