Michelle's Life in La-La Land

I am working on a project that I have to find out the places with the longest wait and dig out the reasons why they are so popular. Need your inputs & comments! - Please tell me the most popular/crowded cafes you've ever been. - Please comment on the reasons I list out if you've also been to these places. ^_^ I'll start with Toast. 1) the hip of the crowd (I think this is the single most important reason.) 2) the good looking waiters & waitresses 3) its location (this contributes to #1, but also the painful parking situation.) 4) its menu (it serves burgers, quesadillas, wraps, and soups, other than the regular brunch/breakfast menu in other places) 5) its hour (it opens until 10pm, much longer than most of the cafes.)