This guy makes great clips that I really enjoy:
http://www.youtube.com/user/chilliqueen2007
I am just promoting him for those that might not know him. He demos basic circuits that are stripped down to the absolute minimum configuration. He is well worth watching.
MileHigh
Thanks MileHigh.
There looks to be some good stuff there.
.99
Jonny Davro is a personal favourite of mine when it comes to Joule Thief and Joule Thief variant experiments. His videos are always clear and quite well detailed. Take a look at these:
http://www.youtube.com/profile?user=jonnydavro#p/u/37/W5irW__iwfk
http://www.youtube.com/watch?v=pLBG1eodFfE&feature=channel
http://www.youtube.com/watch?v=ZanIc5nS78A&feature=channel
http://www.youtube.com/watch?v=vtC4BupY7hw