'Mad Men' Season 5 Premiere: 5 Things You Might Have Missed

After 19 months of anticipation, "Mad Men" returned to AMC in stylish fashion Sunday night in its season five premiere. "Extra" has compiled the most memorable moments of the night!

Highlights of 'Mad Men' Season 5 Premiere

Don's 40th Birthday

Don's secretary-turned-wife, Megan, threw a surprise party for the 40-year-old mad man, and gave a sultry performance of Gillian Hills', "Zou Bisou Bisou." A perfect balance of awkward and endearing, the scene was one of the most unforgettable of the evening.

Where's Joan?

Sexy Joan Harris, Director of Agency Operations, is on maternity leave and is stuck at home with a new baby while her husband is stationed in Vietnam. Meanwhile, the baby's father is actually Roger Sterling.

Roger and Pete Duke It Out

After Pete Campbell tries to grab a more posh office and bigger clients, Roger crashes Pete's meeting with Mohawk Airlines. Pete's attempt to secure a bigger office was nothing more than an envy driven cry for appreciation.Later, Pete tinkers with Roger's calendar, sending him on a wild goose chase at 6am to meet one of his clients in Staten Island.

The Musical Bean

Peggy delivers a peppy "bean ballet" pitch for Heinz, unaware that Don set her up to fail. Don joins the meeting and doesn't go to Peggy's rescue.

Lane Pryce -- The Next Don Draper?

After having sex with a prostitute last season, married partner Lane Pryce continues to explore extramarital possibilities when he finds a wallet in the back of a cab, leading to a flirtatious phone conversation with a mysterious young woman.