Cheap 3D effects are not the way to go.

A posting at wired got me worried. We’re starting to see alot of cheap 3D tricks to catch in on the rush. These half hearted attempts at giving 3D could undermine the entire effort in making 3D video a mainstream delivery.
http://www.wired.com/underwire/2010/01/star-wars-3d-retrofit/

I saw superman in 3D which was a lame attempt at doing this very thing. having only parts of the movie in 3D. And what’s worst is that the 3D effect was basically 2D live action animated objects superimposed onto each other. In effect, you get what you see from Paper Mario. or something similar to a 3D birthday popup card. Lame indeed. To the movie execs, please do not encourage this. Star Wars in true 3D would be great. But I would wait another 10 years if they would perfect it.