Attend at least one major sporting event: the Super Bowl, the Olympics, the U.S. Open.
Throw a huge party and invite every one of your friends.
Swim with a dolphin.
Skydive.
Have your portrait painted.
Learn to speak a foreign language and make sure you use it.
Go skinny-dipping at midnight in the South of France.
Watch the launch of the space shuttle.
Spend a whole day eating junk food without feeling guilty.
Be an extra in a film.