The Witcher 3: Wild Hunt - Every Screenshot You Need To See
16. Boss Battles Make For Great Trophies
Something Fable did fantastically well was allow you to show off the spoils of your kill back at the various villages, for the sake of earning more respect and dialogue from the citizens.
The Witcher doesn't feature any of the emotes seen in Peter Molyneux's baby, but as seen in the Griffin demo footage, it looks like you'll be able to behead and take home parts of your quarry to trade for credits.