A mediocre, sometimes cringe-inducing ripoff of the Matrix that insufferable morons claim was "masterful," "changed their life" and was "the most complex movie of all time." Typically used as a vehicle to promote said moron's distinct and proficient taste in movies.
A: Dude, did you see Inception?
B: Yeah, it was alright. Lots of plot holes, lame dialogue and corny premises.