Weijers Domino Productions - Undoubtedly the best in the business. Every year this Dutch-based company organizes Domino Day, in which dozens of builders spend weeks setting up millions of dominoes using the most creative designs and props imaginable. They own the current world record of more than four million toppled dominoes.

Tim Fort - Also known as The Kinetic King, Tim builds one-of-a-kind gadgets that fall down and explode in more ways than you can shake a stick at. He also has the distinction of making the Top 24 during the 2011 season of America's Got Talent. Whoo, hoo!

Robert Speca - A former world record holder who has made several television appearances. He has published a book that teaches you how to become a domino toppler, and contributed his expertise for the music video "An Honest Mistake" by The Bravery.

FlippyCat - Flippy is the name of a cat who sadly passed away in 2010. His human owner still comes up with many brilliant domino setups. His colorful and thematic YouTube videos have made him one of the most subscribed channels in Canada.

Max Poser - Max has set some world records such as "most dominoes toppled in a spiral" and "most dominoes stacked on a single piece". He has videos of these accomplishments and more on YouTube under the name mmcodomino, so be sure to check them out!

Tim Weißker - Tim is a domino toppler in Germany. He has posted dozens of photos and videos on his website and shares some of his special techniques in both German and English. You can download detailed tutorials which should be very helpful.

Travis Congdon - Travis has also made thousands of his own dominoes and stunts out of scrap wood. He lets children use them to build their own setups, then connects them all together to make one big course. He confirmed my theory that kids love dominoes!

ShanesDominoez - I got to meet Shane in person and was quite impressed with his handiwork. He regularly puts out new videos using thousands of dominoes. Shane has also shown how to solve a Rubix Cube, giving me hope that I one day may be able to do the same.

Aidan Finnegan - This up-and-comer has done dozens of domino setups for schools, churches and art shows before the age of 13, and is accepting bookings for future shows. We were twice his age before we starting doing that. Did I mention he can also play the accordion?

Domino Croatia Team - A pair of Croatian cousins have been toppling dominoes since they were about seven years old. I honestly can't tell you much more than that because I can't read their language, but you should still visit their website. :)

Domino Domino iPhone App - Southwest Apps and Clever Coding have released a game that lets you topple digital dominoes on your iPhone. The link goes to a YouTube video that shows what the app can do. You can find Domino Domino in Apple's App Store by clicking here.

YouTube Dominoes Group - Lots of videos by other talented YouTube users. There's a Discussion Board where members can ask questions and share ideas.

The International World Record Breakers' Club - Contains a nice timeline of domino toppling achievements. It shows how the hobby has rapidly grown over the years.

Do you like to build domino courses too? Let me know so I can add your name here!