/RollEyes - You roll your eyes. [user] is rolling her/his eyes at you.
/ThankYou - You thank [ user]. [user] is thanking you.
/Bat eyelashes - You bat your eyelashes at [user]. [user] is batting her/his eyelashes at you.
Those were just a couple I thought of, I don't know if they have been suggested before or not so do excuse my blondeness if I missed that!
![:)](http://www.nightmist-online.co.uk/forum/public/style_emoticons/default/biggrin.gif)