I like watching films in 3D, it is the next step in film evolution and I think that it is here to stay.
I think that this only really works for movies that have been filmed in 3D originally, like Avatar. Clash of the Titans never looked right, the 3D made some of their heads seem out of shape.
I hope they don't make Star Wars into 3D, Darth Vader would not have the same impact sporting an even more bulbous head!