A system and method for providing user control of the projection of two-dimensional (2D) image information within the three-dimensional (3D) display space of a 3D-capable display device. Advantageously, the system and method disclosed herein allow a user to view 3D video even when the source video includes 2D content, by allowing the user to adjust the z-axis position of the 2D content, thereby causing the 2D content to be projected at a user-specified image depth within 3D space. The user can adjust the z-axis position of the 2D content in real time while contemporaneously viewing the imagery, e.g., via a remote control, and such adjustment can be stored for later use when similar or other 2D content is being viewed.