Memento is a movie about a guy who tries to find the murderer of his wife but has a condition where he only remembers the last few minutes, so works with post-its, photos and tatoos to piece things together. Great movie!
Predestination is a time traveling cop trying to prevent a terrorist attack.
I'm leaving the best part out which is thought provoking, but you will find it and appreciate it when you watch both movies I think.