If you're interested in becoming addicted to a new entertainment vehicle, I recommend tuning in to American Movie Classic's (AMC) "MadMen" marathon today, in which all episodes of season 1 will be replayed. Season 2 begins next Sunday night.
The show revolves around an early 1960's Madison Avenue advertising firm, and it is brilliant, stylish, and interesting. Obviously, they've glammed up 1960 a bit, but it really does look like a pretty cool world. Some things will jump out, such as the ubiquity of alcohol and smoking (I wonder what kind of liability insurance the producers have, what with all the second hand smoke on set), the amazingly true-to-life costuming of the characters, and the seriously locker-room mentality of the firm (a business now dominated by women and gay men).
Give it a shot; I don't think you'll be disappointed.