Karaoke is a funny thing. I've stepped up to the karaoke stage a few times and never without a pretty good buzz. The first time I got up to sing, I took on Cher's "If I Could Turn Back Time". My knees were literally knocking and that song seemed to go on forever. My voice cracked and it was embarrassing. But I felt I owed to all those contestants I had judged in so many karaoke conte