Actor Bruce Willis surprised a waitress when he gave her a $923 tip. The 60-year-old actor and his wife Emma Heming on Saturday night had a lavish dinner with model Karolina Kurkova and 13 business partners at a restaurant here.According to German newspaper Bild, Willis and the group feasted on codfish, lobster, filet mignon and pasta.They also indulged in fine wines, Moscow mule cocktails and tequila until the early hours of Sunday morning, reports a website. (IANS)