I don't think the Wiggles are gay. Three of the four are married with kids, I think.
I've seen a few of the Wiggles DVD's (over-and-over-and-over) and my favorite is the Christmas one that we just bought. They do some of the traditional Christmas songs (Away in a Manger, O Come All Ye Faithful, etc.) I really see the Wiggles as a kind of aerobics for kids-something to make them get up and move.