programer

Here is a presentation on Pair Programming by Llewellyn Falco:

http://video.google.com/videoplay?docid=5248420497037558712

Pair programming is a software development technique in which two programmers work together at one keyboard. One types in code while the other reviews each line of code as it's typed in. The person typing is called the driver. The person reviewing the code is called the observer or navigator. The two programmers switch roles frequently.