This song is perfect for snacktime (as the album implies), with an easy and fun beat by noted rock alums Barenaked Ladies.
The entirety of Jack Johnson's Curious George soundtrack is a delight, but this jazzy, funky song about a trip to the city stands out.
This one is for younger ears, with a simple melody by independent songstress Kimya Dawson that could easily become a favorite for babies and toddlers.
They Might Be Giant's series of educational albums (Here Comes Science, No!, etc.) are a great example of fun, educational children's rock music, from a band many parents already recognize and enjoy.