What do you mean by fun? Try Disney music, like hannah montana, lizzie mcguire...

Try the "Wee-Sing" series. My mom bought those when I was younger, and I loved them. =)

My all time favorite is"I want a hippopatamus for Christmas".I still have it on its original Little Golden record and listen to it each and every Christmas.Wonderful!

Bananaphone of course. The following video isn't exactly family friendly though

I hate to say it Dev 2.0 http://disneymusic.disney.go.com/albums/devo20.html

Here is a site that should provide you with lots of ideas. http://www.bussongs.com/

My kids always had fun singing the "Peanut Butter" song.

I'm being eaten by a Tyranosaurus Rex Check out Barney! He always has a good song for the kids. As a matter of fact, I didn't like him until I had children. AND THEN I LOVED HIM!

The VeggieTale songs are TONS of fun, and each one of them is appropriate for children. You can find them at: www.bigidea.com

there is little bunny foo foo(my fav) which goes Little bunny foo foo went hoping through the forest scooping up the field mice and bonking them on them head... along came the good fairy and she said little bunny foo foo i dont wanna see you scooping up the field mice and bonking them on the head i will give you 3 chances then i will turn u into a goon! So Little bunny foo foo went hoping through the forest scooping up the field mice and bonking them on them head... along came the good fairy and she said little bunny foo foo i dont wanna see you scooping up the field mice and bonking them on the head i will give you 2 more chances So Little bunny foo foo went hoping through the forest scooping up the field mice and bonking them on them head... along came the good fairy and she said little bunny foo foo i dont wanna see you scooping up the field mice and bonking them on the head i will give you 1 more chances So Little bunny foo foo went hoping through the forest scooping up the field mice and bonking them on them head... along came the good fairy and she said little bunny foo foo i dont wanna see you scooping up the field mice and bonking them on the head i gave u three chances and you didnt listen so now i am turning u into a goon! (make a goon face)

This Old Man, he played 1, he played knick-knack on my thumb...