We feel a little sad about this trend toward clown corruption. Some of our fondest childhood memories involve whiteface clowns making balloon wiener dogs or rodeo clowns being chased down by angry mules while wearing a barrel. Those were good times. If you're with us on this emotion, then Slappy and Monday's Jingle Bell Jamboree at the Puppet Playhouse will bring a sentimental tear to your eye starting Friday at Galleria Dallas. Ringling Bros. and Barnum & Bailey veterans Tiffany Riley and Dick Monday have created what they call "The Ed Sullivan Show for a new generation," a variety show with magicians, marionettes and circus features. This is classic clowning in all its vaudevillian splendor, combining physical comedy, puppetry and holiday themes to create a family-friendly production, something that might be much needed the day after Thanksgiving. So leave your "Can't Sleep--Clowns Will Eat Me" T-shirts at home and indulge in an afternoon of innocent pleasures.