:-Þ (raspberry 1)

:-þ (raspberry 2)

ò_ó (angry)

ó_ò (concerned)

ô_ô (somewhat surprised)

õ_õ (intrigued)

^_^ (of course, there's this cute "happy")

ñ_ñ (but then there's this much cuter "happy")

ß-) (on some character sets, this looks like a face wearing goggles)

ø_ø (Stoner McNullset)

ù_ú (Upset but holding it in)

ú_ù (Meditating, kissing, or various others)

ç_ç (Old person)

¦-õ (Yawn with eyes closed, holding a hand in front of his mouth; thanks Pchan)