http://www.youtube.com/watch?v=6GQ2XzsdTsY#t=3m21s
Notice the appended #t=3m21s at the end of the URL address? This is a simple way to link to a specific time within the video. E.g., in this video I wanted to show Eric Klassen’s performance with my recording of Tico-Tico so I simply inserted the code into WordPress editor. You can see the result below: