One of the greatest movies of all time has to be the American classic Lethal Weapon.
Los Angeles homicide detective Roger Murtaugh -- played by the inimitable Danny Glover -- is nearing his retirement, when he’s pulled back in for one last case. As the tension mounts before chase scenes roar off, shootouts explode, and conspiracies become revealed, Murtaugh tends to mutter to himself, “I’m too old for this [stuff]”.
Still, as is noted by one of the characters in How I Met Your Mother, even though Murtaugh always says he’s too old for [stuff], he keeps coming back to do more stuff.