This video claims to be every lightsaber ignition in the Star Wars movies? I can think of a few that it missed just sitting here thinking back on the originals: Vader and Luke’s battle in the cave (granted it was just a vision of Vader, but it felt real to us…)
My first thought was of Vader when he first meets Obi-Wan on the Death Star, but Vader’s lightsaber is already ignited (waste of batteries dude). What about in Empire when Han uses the lightsaber to cut open the Tauntaun? Or what about when Luke uses it to kill the ice monster? Those are just a few I can think of off the top of my head. Very sloppy work.