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), texlive_base (xdvi)

For wmv, asf, mp4, mov, mpeg, avi (blobs..):
 * mplayer, vlc