I do..
I have 2 online currently..
http://neosynthesis.net/page.php?id=26
and
http://systemdanmarc.dk/sdc_n.avi ( full version with danish speech at
http://systemdanmarc.dk/information/sdc.avi )
both have been made for a prize of approx 2.000 euro.
I'm putting my stuff together with the help of EyeonDigitals Digital Fusion, Adobe Premiere and Photoshop.
With programs like either Fusion or Combustion (similar, just cheaper version.. )you can give the quality of digital images quite a touch.
It doesn't have to cost much to do a video.. it is basically just a matter of having the right ideas.. and manage to boost into your results.. Fusion takes some time to learn to harness, but it is worth it. It is hard to give general advice except from keep it simple unless you have someone fueling you with money..
Apart from that.. feel free to ask if you have some more direct questions.. it is quite a large topic.. and I can't really tell you how to do it.. I can tell you how I do it, but even that will be hard to explain..