Apple - 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?

No.

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.