OK, so Casualty’s Luke Bailey is hardly an A-lister, but when it comes to people on telly getting their kits off, we’ll take any naked manmeat we can get. On tonight’s Cirque De Celebrite: Backstage At The Big Top (Sky One, 8.30pm), Luke spontaneously strips off in front of the cameras, much to the alarm of host Brian Dowling. One thing’s for sure, Luke’s naked form is way more attractive than those dodgy costumes the Cirque lot keep getting forced into…