When a guest fainted at a Willow Road after-party for the upcoming Ethan Hawke–Julie Delpy film “Before Midnight” the other night, actor David Rasche jumped to the rescue. “He dashed to the bar insisting on a bag of ice immediately,” said a spy, “Then he called over waiters to bring her food.” Rasche, a guest at the bash, “stayed with the woman on the floor until she was able to get up and then sat with her at a quiet booth” until she was less woozy. (The fainting victim explained she’d gone to a spinning class earlier and never ate lunch.) Viewers at the Crosby Street Hotel film screening included Bennett Miller, Parker Posey, Cuba Gooding Jr. and Sony film honcho Tom Bernard.