Simple. Find a funny smiley on the internet, or create one of your own, and post it here... Whether they are animated or still is up to you. I'll start. TF, feel free to add any of these to the smilies list if you wish. :D

Two smilies that I created myself:
:jet:
http://img12.exs.cx/img12/7002/Jet.gif

:AAAHH!:
http://img103.exs.cx/img103/421/AHHH.gif

http://67.18.37.17/1410/98/emo/locked.gif
it's locking time http://67.18.37.17/1410/98/emo/locked.gif http://67.18.37.17/1410/98/emo/locked.gif http://67.18.37.17/1410/98/emo/locked.gif http://67.18.37.17/1410/98/emo/locked.gif ;)

http://pages.prodigy.net/indianahawkeye/newpage13/8.gif
http://pages.prodigy.net/indianahawkeye/newpage21/2.gif
http://pages.prodigy.net/indianahawkeye/newpage21/3.gif