Anyway my personal top sci-fi atm is
Blade runner, 12 Monkeys, Children of Men, T2, Akira, Undiscovered Country, Alien, Wrath of Khan, Dark city, Moon, The Matrix, Interstellar, Gattaca, Brazil, 2001, Inception, AI, Strange Days
Mostly ordered by how much I would want to watch them again. Inception has fallen the most in my list. It was pretty tedious when watching again tbh. Star Wars I've seen too much to feel like watching again atm :) The matrix drops a few places every time I watch it :/
Gattaca and Brazil are among my favorites too.
I haven't seen Matrix in many years, it doesn't have anymore rewatching value for me personally.
If we have come to sci-fi discussion, I would recommend to everyone a really underrated one - Pandorum (2009), it is one of the coolest and shocking ones I have ever seen but like most lower budget movies it went under the radar.