Another movie that features a laser, not strictly about it though, is
'The Manhatten Project'. A lab where plutonium is made, has a copper
vapor which is shown to cut through metal, and even light a cigar
Not necessarily a movie, but laser-related nonetheless.
It's an episode of Inspector Rex, title 'Rays of Revenge'. Can't remember which season, unfortunately.
I won't spoil the plot for you, apart from mentioning that a 473 that doesn't diverge and can punch holes in metal, a Coherent DPSS green, an unnamed Nd:YAG and a Coherent ArKr Whitelight feature in it.
The plotline revolves around lasers. And exaggeration. But mostly lasers.
That is true, I was attempting to limit it to movies with lasers as a core theme or plot element. However the topic sort of diverged so I just figured the ones mentioned already were pretty much all the known ones.