3D content is now available on Verizon FIOS, through regular On Demand but now also on HBO On Demand! So if you're subscribed to HBO on Fios, you can now watch 3D movies for free! Currently, 3 movies are available (in my area anyway), Clash of the Titans (not that great), Coraline, and Monsters vs. Aliens.

Glad to see Fios catching up on 3D content! The only caveat is that it is delivered in Side by Side format, so not Full HD. You'll have to change your TV's 3D settings to Side by Side manually.