The brilliant and accomplished Pete Gayed recently turned me to a piece over at Slate that chats about interjections such as awwa, meh, feh, and heh. What's nifty about the article is the way the author/coder embedded sound and video in the text. With sound files and video worked immediately into the piece, it looks like this:
I love not only how the sounds are captured instead of textually represented, but also how they're worked into the document instead of being set aside as illustrative material.
Needless to say, paper as a platform does not support this.