I like that Ben Stilller (@redhourben on Twitter) took this humble-yet-funny approach to introducing his online presence to the new Web:
httpv://www.youtube.com/watch?v=bCt6XcxemKo&feature=channel
His short video where he introduces Mickey Rooney to Twitter is cute too:
httpv://www.youtube.com/watch?v=f30D3LSe-kY&feature=channel