PNG ICO ICNS MORE
Avatars & smileys
Smooth
Buttery
happy, smile
Orange
128x128
UI
Bloggers Vol 1-7
happy, happy face, smile
Chocolate
512x512
lol, happy, Emoticon
Developer Kit
smiley, happy
DarkGoldenrod
Desktop apps
Farm-fresh
happy, Emotion
Gold
32x32
Computer & hardware
Systematrix
Epic, lol, Face
Khaki
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Social and web icons
happy, smiley, yahoo
Goldenrod
64x64
Mixed
Scrap
happy, smiley, Face
August
really, happy, smiley
Lin
Face, smiley, smile
PNG MORE
Network & communications
Oxygen
happy, Gear, Cog
CornflowerBlue
22x22
Face, happy, sleep
KDE Crystal Diamond
Face, smiley, happy
Black