there are sure more than 3 great fims I watched more often (more than 3 times) ...and it wouldn't be fair to list only one so here are 3:
Blade Runner I've seen in movie theaters even more than once, in german synchronisation, original and later several video or DVD cuts.
among many others I still love HELP! with the Beatles (I've seen Ringo and his AllSTARS 2018)
Both have fantastic music.
And for something a bit fresher:
HOT FUZZ --- when life or work or family or all together suck(s), you know, there are some scenes....