Mine have always been big fans, but I was very surprised, when the whole Sam drama unfolded that there were mother's who grew up watching the Wiggles that now took their kids to the Wiggles. It's quite an extraordinary achievement.
My kids used to watch the Wiggles when they were younger. We still have some videos of Wiggles shows even though my kids are now teenagers - I guess we just couldn't throw out the memories we have of their younger years.
They're a little bit old for it now, but they did for about 5 years. My son in particular was obsessed with them for a year or two, loved dressing up as Sam when he was a Wiggle and singing and dancing. They really do have the winning formula.