Somewhat of a personal question. If you have not seen a 3D movie yet maybe you should ask yourself if you even enjoy the type of movie that will most likely be available in 3D. My personal answer to that question is probably not. I fully expect movie studios to go totally overboard with special effects to the point that they become tiresome and gratuitous and then even more tiresome and gratuitous.
Before everyone jumps all over me for the following please note the source. I am just relating what I was told at the Panasonic 3D demo at T.H.E. Show in January. The young rep was very enthusiastic and told me:
1. 3D TVs will be surprisingly priced--not that much more than regular TVs
2. No media battle this time--Blue Ray is the winner
3. There is a surprising amount of content that is being worked on by the studios.
My take on point 3 is the studios hope (desperately need)

to have another winner and don't want to be caught short or late to the party.
Again, I make no claim for the accuracy of the above or my faith in them. But they are interesting discussion points.