Some bastard removed the 2ch emoji from wikipedia, so here's a link to an older version of the page:

http://en.wikipedia.org/w/index.php?title=List_of_emoticons&oldid=464490817#2channel_emoticons

Some of the more useful ones:

(╯°□°）╯︵ ┻━┻ (ノಠ益ಠ)ノ彡┻━┻

┬──┬ ノ( ゜-゜ノ)

（ ´Д｀）

キタ━━━(゜∀゜)━━━!!!!! 

ｷﾀﾜァ*･゜ﾟ･*:.｡..｡.:*･゜(n‘∀‘)ηﾟ･*:.｡. .｡.:*･゜ﾟ･* !!!!!  

(*´Д`)ﾊｧﾊｧ

(☞ﾟヮﾟ)☞ or ☜(ﾟヮﾟ☜)