TPM – Obi-wan (his first line, aboard the federation battleship)
AOTC –Anakin (when the 3 creatures are led out into the arena)
ROTS - ?
ANH – Luke (when they’re approaching the death star) and Han (in the trash compactor just before the walls start closing in)
ESB – Leia (when they exit the Falcon to explore the “cave”)
ROTJ – C3P0 (before meeting with Jabba) and Han (as the ewoks try to cook them
i think it will said twice in ROTS, one of the times will be most likely when...
obi-wan lands on Mustafar to find Anakin (or Vader, as he will be known by then)
Edit: damn it!