As I already cleaned most of my place, I rewarded myself with an extremely important Google research: smiley faces one can do using the keyboard.

I would love to know more and I found a page with lots of them.

My faves, not all of them are in that page:

xD Wide grin
=) Smiley face
=( Sad smiley face
;-) Wink
^_^ Cute face
#^_^# Cute face blushing
o.O Whoa!
\o/ Flailing arms
*\o/* Flailing arms with pompoms
x_x dead. That's what happens to me when someone posts a hot JF pic. *ded fangirl*
>8-( Confused or angry
=Þ Raspberry
T_T crying
*_* Dizzy or starry eyes

New smileys that I learned by my very important research:

d---0.o---b Two Thumbs Up
=* Kiss
:-# My lips are sealed
w(o_o)w Rocker guy
0 :-) Angel
(>'.')> Kirby
(<@>.<@>) zoned out or Stoned Pokemon
(_8(I) Homer Simpson
(\/)
(o.o)
(")UU(") Bunny
::) Happy alien

Smilies are based upon the ones designed by Gilles Nuytens aka Wallpaperman.

Stargate icons mostly made with screencaps from Borg_Queen.

Heroes icons made with caps from screen-caps.com.

Credit when use, please.

( all here )