a good app to watch flat movies on Gear VR?

[luv2liv]

basically i want to watch movies lying down. i notice the apps i've tried move the screen around if my head moves around. so if i turn, the movie screen move and no longer in front of my eye balls.
VLC plays 3d movies really nice and in front of my eye balls no matter how i move my head. i also get the 3D fx when the movie file is side by side. however, watching flat movies look weird on VLC.