H.B.
I have a group for you. They are FUN and they have a webpage (as well as a myspace page) Their name is Streetside. They are VERY clean and family oriented. My 4 yr old knows the words to almost all their songs. They get the kids into the songs and the adults like them because they are songs they know. Anyway, here is their webpage
http://www.streetsideguys.com/
http://www.myspace.com/streetsideacappella