Yes, I have always enjoyed the Art of Entertainment series onboard. They are usually held at 10:15 am in Studio Sea with an afternoon session at about 1:00 or 1:30. The morning sessions are where they have food demos and the afternoon classes are usually napkin/towel folding, plate decorating, Mixology, etc. The ice carving is really neat to see. The best place for a photo op is from Deck 10 looking down to the Goofy Pool Stage on Deck 9.
As another poster mentioned...the chef doing the demo does make a big difference. We once had Corey from Australia who had the whole room laughing from start to finish, and this time we had Panda from India who was good, but a very serious, quiet personality. A member of the Cruise Staff always hosts these events and are there to answer questions as well. They provide copies of the recipe for you to take home. Studio Sea has monitors overhead, so if you cannot be right up front, select a seat where you can see the monitor and you will be able to see exactly how the dish is prepared.
One great advantage of attending the series in Studio Sea, especially on the last sea day is that they hand out Galley (kitchen) tour tickets right there to the guests at the Series. Otherwise you must wait on a line to pick up tickets for the galley tour and sometimes they run out.
MJ