A major pet peeve of mine is when, on occasion in film and television, major [female] characters are brought back from a mysterious or monumental death, and instead of looking like something out of Shaun of the Dead, they typically look like they're about to go down the red carpet. I'm referring to the perfection of hair post death and resurrection. The series and film, respectively, that stand out to me are: Buffy the Vampire Slayer and X-Men: The Last Stand.
Five months after Buffy sacrifices herself to save the world, she is resurrected by a spell, digs herself out of the grave and, while she is a bit mussed, her hair is noticeably longer then when she died, evenly parted, and looks as if she recently received color accents. Similarly, in the end of X-Men: X2, Jean Grey sacrifices herself under an intense wave of water in order to allow her fellow X-Men to escape. Upon her "death" she has a short Charlie's Angels type haircut. However, when Jean is found alive months later, she is rocking a more Cher type style. Now, there is not enough moisture in the world to produce those long, wavy, highlighted locks, when you're supposed to be dead.