What are the 5 love languages?

I wonder if any one agrees with the words of Gary Chapman, on his discovery of the 5 love languages. Over the years of his counselling couples he finally categorized 5 love languages that people wanted or gave. I can relate to it can you?
Here is a quote from his site

The 5 language are:

• Words of Affirmation
This is when you say how nice your spouse looks, or how great the dinner tasted. These words will also build your mate's self image and confidence.
• Quality Time
Some spouses believe that being together, doing things together and focusing in on one another is the best way to show love. If this is your partner's love language, turn off the TV now and then and give one another some undivided attention.
• Gifts
It is universal in human cultures to give gifts. They don't have to be expensive to send a powerful message of love. Spouses who forget a birthday or anniversary or who never give gifts to someone who truly enjoys gift giving will find themselves with a spouse who feels neglected and unloved.
• Acts of Service
Discovering how you can best do something for your spouse will require time and creativity. These acts of service like vacuuming, hanging a bird feeder, planting a garden, etc., need to be done with joy in order to be perceived as a gift of love.
• Physical Touch
Sometimes just stroking your spouse's back, holding hands, or a peck on the cheek will fulfill this need.
Determining Your Own Love Language
Since you may be speaking what you need, you can discover your own love language by asking yourself these questions:
• How do I express love to others?
• What do I complain about the most?
• What do I request most often?
Speaking in your spouse's love language probably won't be natural for you. Dr. Chapman says, "We're not talking comfort. We're talking love. Love is something we do for someone else. So often couples love one another but they aren't connecting. They are sincere, but sincerity isn't enough."