Sample source from conference presentations and also tutorials on www.malcolmgroves.com
Sample source from my Introduction to Generic Collections in Delphi session
Delphi FireMonkey application for OSX that shows how to open files and URLs in default applications. More info
Delphi FireMonkey application for OSX and Windows that shows how to find "Special Folders" (ie. OS folders like Documents, Desktop, etc) and enumerate the contents in a cross-platform fashion. More info
Samples from the series of LiveBinding in XE3 posts on my blog. More info