Since 1983 Apple has kept its menu bar stuck to the top of the
screen, as opposed to the top of the window like (almost) everyone else.
There are some pros and cons of this solution, but so far I believed the
former are in majority (Tog explained it more lively than I ever will in
his 1999's column "A Quiz Designed to Give You Fitts" [1])
However, this week Apple unveiled a new set of LCD displays, among them
a big 30" monster.