Here are a few famous last words.
“Never felt better.”—Douglas Fairbanks, Sr.
“Why not? Why not?”—Timothy Leary
“Monsieur, I beg your pardon.”—Marie Antoinette, upon accidentally stepping on the executioner’s foot
“I am about to, or, I am going to die. Either expression is used.”—Dominique Bouhours, a grammar expert
“Are you sure it’s safe?”—William Palmer, condemned criminal, upon stepping up to the gallows
“Why yes, a bullet-proof vest”—murderer James Rodgers, when asked if he had a final request before being put before a firing squad
For a more thorough list, see the BBC’s site of Famous Last Words.