Many people love "Back to the Future."
But actor Justin Long may just be one of, if not the biggest fan when it comes to the 1985 comedy hit starring Michael J. Fox as time-traveling teen Marty McFly and Christopher Lloyd as the professor who invents the machine that sends McFly on his epic journey.
Long recently sat down with MTV News' Josh Horowitz for his "After Hours" web series and the pair completely geeked out over the classic film which follows McFly as he ventures back to 1955 where he meets his teenage parents and upsets the delicate balance of the time continuum.
"That is my favorite movie," Long reveals at the beginning of the question and answer session.
That's almost an understatement when you watch how excited he becomes with each successive question and the panic he endures when an answer doesn't come easily.
Best of all, not only does the "New Girl" actor and boyfriend of Amanda Seyfried rule when it comes to "Back to the Future" minutiae, he also does impressive Michael J. Fox and Christopher Lloyd impressions.
Seriously, do you even remember Huey Lewis' cameo appearance in the band audition scene? Justin Long does: