I love doing this. Not really asking if it's an autistic trait, per se, just wondering if Aspies like to do it too.
They are like mini films that I can mimic perfectly, I love to memorize every detail and get as close as to the actor's tone of voice and facial expressions as possible.
They run through my mind all day, very random commercials and lines from TV shows pop-up out of nowhere, or are triggered by things people say.