Pretty cool, and totally do-able!
http://hackaday.com/2013/05/23/herd-single-cell-organisms-with-your-mind/
Now where does one get a 1080p webcam for less than $50? Something
like either the Logitech C615 or C920, on ebay there are 1080p
keychain cameras (they often look like car key fobs) that write to an
SD card, so presumably one might be able to simply emulate an SD card
with something like a raspberry pi, or the new beaglebone, to get a
live video feed.
--
-Nathan