Thanks for posting these Jason. Really fascinating to see them in close-up AND moving. I'm going to be trying this myself a bit more this year.
Here is one of a wasp I filmed on Upton Heath last year:
Name the Insect : 1 July 2008 on Vimeo
A Robberfly in the garden last year:
Robberfly : 14 August 2008 on Vimeo
Drone Fly last year:
http://www.vimeo.com/860778
Not as small as your subjects, but still interesting to video.
You might find Vimeo useful, as their quality for video is MUCH better than YouTube and Google Video. Also worth using manual focus (if you can) and a tripod is a must if you are at the end of zoom focus. Looking forward to seeing what you manage to video next.
Cheers. Jane