We don't need to explain too much here, as the clue's in the headline.
The Macro Lego Universe have applied their considerable skills to this fantastic brick-by-brick recreation of the famous clock tower scene from the 1985 classic Back To The Future, complete with full lighting, effects and movie soundtrack.
It was filmed at Brick 2014, which took place in September last year and was finally finished a few days ago; we'd say it was well worth the wait.
Now, could they have a go at doing the rest of the film too? That would be excellent.
Watch below and compare and contrast with the original scene below the Lego-ified version.