Ashton Kutcher and Demi Moore
Jackson Lee/Splash News Online
celebrated his first day of work on Two and a Half Men
with wife Demi Moore
and a big group of friends at Trousdale Lounge
in L.A. – and the couple looked "happier than ever," says an onlooker. Kutcher was the life the party, cracking up his friends with jokes, but also snuggling with his wife during the lively night out.