Moreover, I'm against mindless tasks just to do extra work to raise a grade. If there is a possibility for extra credit in a class (and this could be rare) it should be very educational.
I think that two series of videos are educational enough that I'm willing to raise your quiz scores if you watch them. For each two video episodes you watch I will raise a quiz score of your choosing by up to 50% (but your final score can't exceed 100%). That is, if you originally scored 40% on a quiz then watching two videos could raise it to 90%; if your original score was 68% then watching two videos would raise it to 100%. Watching only one video doesn't do anything for a quiz score; you must report them in pairs.
You do not need a lengthy summary of the videos, just list the series, number, and title; I will trust that you really watched them and gained the educational benefit. You must also specify which quiz score you want raised. It is possible to raise the score on a given quiz twice if that will benefit you. Remember, it is up to you to specify which score you want raised. Use this form to submit your reports. You may not turn in more than one of these forms in any given week.
One of the sets of videos that can be used for this activity is "The Mechanical Universe" (the college version, not the high school adaption). This series is available from our library (VHS and DVD) and also as streaming video over the web at www.learner.org.
The other video series you may use is Walter Lewin's lectures to a similar physics course at MIT. They are available as online video streaming as part of MIT's open courseware project at Physics 801 Lectures, and Physics 802 Lectures, and Physics 803 Lectures. These lectures are also available as video podcasts from the iTunes Store. Search for Walter Lewin.
It is my sincere hope that you will watch these videos, even if you don't need them to raise your grade. They are each excellent and provide instruction in ways I can't reproduce in our classroom. The smartest way to use them is not to wait until the last month of the semester, but rather watch the corresponding episodes that are relevant to our current class discussion.