Making characters, most definitely. I've always been most fascinated in characters and character development, whether it be in books, movies (Hannibal Lecter from Silence Of The Lambs is my favorite character of all time; I even have a character that was inspired by him - I can spend hours ranting on how Anthony Hopkins nailed the role), or D&D. Every character has a different story to tell, and a different role to fill.
And let me tell you, NOTHING feels better than knowing that your character is an invaluable part of the party. I love it when the barbarian can't break the door, the wizard can't blast it away, the cleric isn't doing a thing, and my little rogue walks up and calmly picks the lock. High fives ensue.
But I hate it when other people's characters end up like this - he has long, flowing hair; he's handsome, strong, and heroic; AND he has a DARK AND MYSTERIOUS PAST!!! Wow, I have NOT heard that before. Is it just me, or do way too many characters seem to look like Fabio with a DARK AND MYSTERIOUS PAST? Wow, can you say archetypal? Every character should have an RPD - Required Personal Defect. Don't be afraid to make an ugly, greedy, or cowardly character - they can be fun to play!