I too enjoy the variety/dance/singing shows that they put on during the cruise. Some of the older headlines have seen their days and while some of them can put on a good show, some just don't. We always try to make a show after dinner while cruising, its just part of the "whole" cruise expierence. On a recent cruise however, Jimmy Osmond was onboard with most of his family and really had a great show, even some of his younger kids entertained, so there is definitely talent in that family. He even had a video that went along with some of the numbers, was really a good show.
We also enjoy the magic shows and good comedians, a lot of these shows are hit or miss and usually the cruiseline singers/dancers are great!