FRAPS is widely used by many. There are far too many screen recorders out there for me to list. Try download.com and it's search.
I am looking for a good program to record on-screen activity. Not in the sense of spying, but to record my screen for a period to replay later in order to instruct people how to do something certain tasks in pieces of software we use.
A free program would, of course, be great, but I am looking for quality recording, not cheap, so it doesn;t have to be a free one. The other person being able to clearly see what is happening is most important.