For absolutely no reason other than sheer joy, I bring you some videos made by geeks that are way geekier than you. At least when it comes to dominoes.
Behold! The Great Wall(s) of Dominoes, aka—What to Do When You Have 65 Hours and 60,000 Dominoes:
Witness! Super Domino Brothers, aka—This Guy Is Way More Into Nintendo Than You Are:
Watch! Life-Sized Dominoes, aka—This is Cool, But These Guys Need to Get a Hobby:
It's just a bunch of objects knocking each other over, but it is impossible to tear your eyes away!
What's the longest domino chain you've ever made?