I find the fact that you can randomly go around hugging people to improve your mood and theirs to be absolutely adorable. More games need to give you the option to pass a friendly hug along to someone else, whether for a reason or totally at random.
So far, I know of only two games that really allow for rampant hugs as a game mechanic - the remake of A Boy and His Blob, and Glitch. Kudos to the Glitch devs for providing an outlet for us cuddle-addicts everywhere.