The commercial cut-ins by PTI continues to be a national treasure. I'm not sure if Uncle Tony chooses to go with this look while out on the town, but the suit jacket and spandex combo is certainly a bold choice. Don Cherry he ain't… and I'm not sure I ever want to know why Kornheiser went with this particular ensemble today.
UPDATE: A couple tweeters wrote in to say that it's a brace used to help Kornheiser's ailing knee. Sadly, that's a rather normal explanation.