I am looking for a transparent screensaver (bouncing image, etc.) that
will work without closing out the screen to help prevent
burn-in on my plasma screen.  Currently, the screen savers I use are
your typical savers which block the screen.  I need a screensaver that
doesn't block or lighten live feed on the screen, such as live video
or running applications which constantly change displayed information.

This is interesting. You want to prevent burn-in on fixed locations
that change data... Except it can't change what you see...

A suggestion is to change to a ticker type screen saver. Another is to
turn off your monitor.

From http://www.halfbakery.com/idea/Transparent_20_20Screensaver ....
a screen buddy like the orange, the sheep, Neko, could do this. It's
usually unobtrusive, but they pretty much cavort everywhere, and you
can pick them up and place them anywhere..

http://www.screenweaver.com/samples.cfm?nav=1&sub=2 has some animated
samples that can use Win2k and winxp alpha transparency.
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This is a free comment. Search term: transparent screensaver.

Just a general comment - most recent monitors don't have any real need
for screensavers in terms of protecting the monitor unless you plan to
have it for 10/20 years or so (guesstimate). In all honesty, I suggest
you don't really need a screensaver.