Hide the scrollbar to create a sleek and modern modal like window. Can be used many ways. Would be ideal to couple with some JS for indicator of further scroll content (custom scrollbar).
Inspired via a solution provided to the question posted on StackOverflow and answered in this fiddle: http://jsfiddle.net/5GCsJ/954/
Original author took it further to develop a css manipulable scrollbar.
I wrote this up to document the fix.