Ishmael - *SPOILERS*
It's a little embarrassing, but I didn't notice that Ishmael's arm was amputated until the flashback surgery scene, where they actually cut it off. Now when I watch the movie, I see all these clues, the way he takes out his pencil and paper with one hand and his mouth, the way he rolls up his sleeve when he puts his jacket on, etc. so it wasn't hidden, but at the same time, it wasn't totally obvious.
Am I the only one who missed this critical fact on the first viewing?
"A hot dog is singing. You need quiet while a hot dog is singing?"