I adore my hugs. There are many different kinds I feel, all useful for different purposes.
1) The hug from a friend who is just too close for a handshake.
2) From somebody slightly bigger than average, a closing of the eyes is often neccessary to take in the full comforting nature of this kind of warm hug.
3) A mildly sexual hug as you feel each other's body parts against each other, pulling away before the other person notices anything untoward.
4) Jumping on somebody taller than you and hugging as hard as you can, a stress relief hug.
5) Being jumped on by somebody smaller, another stress relief hug.
6) Seeing each other from metres away and charging into each other's arms, a potentially dangerous hug but gratifying nonetheless. Very good if hugging the person in particular has become a habit.
7) The hug from somebody you barely know, often given when in need of comfort.
8) The "Goodbye" or "haven't seen you in ages" hug share many similarities. Tears cost extra.
9) A hug from a strong, more dominant male. Close your eyes and lean your head against his hard, muscular chest or shoulder.
10) The warmth hug. It's a cold day. What a wonderful excuse to ask for a cuddle!
11) The "i'm comfortable with you" hug. An arm round the shoulder of a close friend of the opposite sex.
12) "I love you mummy"
13) The awkward hug, the one which you regret giving straightaway as you break away and awkwardly fall into silence due to: the other person not enjoying hugs, realising you spend lots of time hugging that person instead of talking to them, or realising you're at work and there's a sexual harassment code.
14) The convenience hug. Cold? Watching a horror film? Going to sleep? Doesn't matter who it is.
15) The absurdly long hug. Neither person wants to break it off, so they don't
I have experienced all of these hugs myself. Feel free to add your own =).