There are very few that push any boundaries in science fiction. Some ideas i get a kick out of seeing on screen though. I liked Gattaca, especially the scene where the doctor convinces the parents that they owe it to their child to take advantage of all the medical technology that's available. It's not only plausible, it's topical. Brazil is great if slow in parts and i liked Ex machina as well. Primer, mainly the first half as discovery happens. One of my favorite short stories was about an expedition to a distant planet, when they finally arrived after 200 years of travel it was completely built up already. They sent the crew back to their own time. Anything that touches on that idea gets me. 3 body problem did, and interstellar did as well. I'm waiting for Rendezvous with Rama. It'll never get made it seems, kind of like Mote in God's Eye. Either that or they'll miss the point.
That's a start.