My teenaged son was dragged to the first movie by his girlfriend. He still won't talk about it - but he's unremitting in his hatred for all things Twilight.
Naturally for the last few years he's been getting all manner of Twilight themed crap from us...For example, this Christmas his stocking was stuffed with Candy Hearts that had Twilight messages on them. We spotted a bag of the stuff at Halloween, and hid it specially for him. Year before it was trading cards we picked up on Burger King drive through runs.
So in my book, the best thing about Twilight is the incredible torment it can be used to inflict!