Another captivating macaque story! What can't these creatures do?!? Grooming, sexual favors and now food service. Video of simians serving drinks and hot towels in a Japanese restaurant became a hit on YouTube, where a news clip circulated in which the restaurant owner, Kaoru Otsuka, said he did not teach the monkeys waiting skills. Apparently, they learned by observing humans. Although the macaques work only two hours a day, they never get any days off. Two words: monkey union.