Back in 2013 I reviewed Upstream Color, the second film from writer/director/entrepreneur/interesting guy Shane Carruth. You may have seen his first film, PRIMER. If you haven't, may I suggest that you check it out? It's well worth a watch, and will bend your brain into new shapes.
Upstream Color is more emotionally resonant, and possibly even stranger, than PRIMER. I liked it, and you can read my review of it right here.