Samsung Galaxy S3 Disassembly - Screen Repair / Replace / LCD (AMOLED) or Touch Screen

If you've watched the drop test on AndroidAuthority then you might find this puts your mind at ease for replacing the screen..
Drop test http://www.youtube.com/watch?v=K7e9ebi41Wc

DIY repairs will void any warranty but may save you money :-)
Here's some high resolution scans to help identify all the parts:
Mainboard & Parts 3Mb http://mymail.pwp.blueyonder.co.uk/Main-Parts-List.jpg
Mainboard Back 2.5Mb http://mymail.pwp.blueyonder.co.uk/Mainboard-back.jpg
Screen Back 3Mb http://mymail.pwp.blueyonder.co.uk/Screen-back.jpg

Shot with a Panasonic HDC-SD700