@dajbelshaw you definitely have some good titles on there, so I'll have to 'steal' some of your suggestions. :)
#Contact, #DonnieDarko, #EternalSunshineOfTheSpotlessMind, #TheGirlWhoLeaptThroughTime ¹ (there are multiple versions of that btw, from live-action to anime), #TheInventionOfLying, #Memento, #ShortCircuit and #VanillaSky are ones I've seen once or twice already, but definitely wouldn't mind rewatching.

¹ if you liked this, you might also like The Timetraveler's Wife