Can my Macbook Pro's display receive inputs from other sources?

Is it possible to use my Macbook Pro's display to receive inputs from other sources?

It is generally not economically feasible to build a custom display around Apple panels.

Yes, but it's not worth it.

You would have to take the laptop apart, design and engineer a custom converter to drive the LCD interface (internally, it's going to use LVDS to handle the interface between the laptop's motherboard and the screen), and power it somehow. It also would probably render the macbook from which you removed the screen unusable as a laptop.

It would take a few hundred hours of engineering time, and cost a lot in prototypes.

You are better off just buying a separate LCD.

If your other input sources are networked computers that are on the same network as your MacBook? You could use a VNC like program such as ScreenRecycler to let other computers show their screen on your Macbook.

If you're looking to preview video from various analogue/digital sources, you could also use a video capture device to capture analogue video, HDTV, or digital HD source material.

The Macbook itself will still need to work, but this would be one way of displaying video from other sources on your Macbook's display. You could probably even use the HDMI interface on BlackMagic's thunderbolt capture device to display the (DVI) video output from another computer. It'll be awkward and cumbersome, but should probably work.

Of course, the answer you're probably looking for is that you should just buy a traditional LCD monitor if you need a second display for your desktop. All of the solutions described above are considerably more awkward and expensive than doing that.