OK, are you an amateur or professional traveler? If don't have a membership in an airline club, you are either an amateur OR you are crazy!!! The major airlines have club lounges at popular airports for their most loyal customers and those that have paid for memberships. This is a MUST for a business traveler that spends his/her entire week in airports.
Generally, these clubs provide a relaxed place to wait, have a few drinks, and conduct business. Plus, you can check-in or do any other type of agent transaction. Some of the locations also have showers available. It is like an oasis when just on the other side of the doors you have the general flying public -- frustrated from flight delays, poor food, and cramped waiting areas.
I prefer the Continental Airlines President's Club. Membership in the President's Club permits the member to bring two other travels into the club, or bring your spouse and children.
On one very long rainy night when flights were delayed about six hours, the President's Club saved me from insanity. One of the clubs in Houston had a room for my family to go into that was completely away from everyone else. It even had a tv/vcr with children's videos. It was only 45 mins, but that turned a terrible experience into something memorable.
The price is a little expensive if you don't fly frequently, but it costs even more (sanity) if you travel all the time and don't join one.