Shock

:> -- What?
:@ -- What?
:Q -- What?
:-o -- Uh-oh or surprise
;-) -- Sardonic incredulity
:O -- Shocked
8-| -- Eyes wide with surprise
:-/ -- Skeptical
8-O Oh-my-god
:-C -- Unbelieving, aghast
|-{ -- Good Grief! (ie. Charlie Brown reference)