If you are willing to source your movies from other places rather than iTunes Store, the only working solution is to watch Over-Under or Side-By-Side (OU or SBS) encoded 3D movies. They are technically just 2D movies and utilise the 3D TV-set's capability to decode and present them in 3D. You obviously lose half of the resolution in one direction.
There is no support for real (native) FullHD-3D formats in the whole Apple ecosystem.