MozPlugger by itself isn't very useful. You might want to install some
of the following packages:

For pdf:
 * kdegraphics (kpdf)
 * epdfview
 * evince
 * xpdf
 * gv
 * acroread


For ps:
 * kdegraphics (kpdf)
 * evince
 * gv

For dvi:
 * kdegraphics (kdvi)
 * teTeX_base (xdvi)

For wmv, asf, mp4, mov, mpeg, avi (blobs..):
 * mplayer + win32-codecs
 * xanim
