I am deeply grateful and honored to receive the 2006 Distinguished Scientist Award from the Heart Rhythm Society. Many outstanding individuals have received this award since it was established in 1982, and it is humbling to realize that my small feet are walking in the footsteps of these giants. I would be remiss if I did not thank the numerous colleagues, fellows, and students who performed most of the work leading to the papers of which I am a coauthor. © 2007 Heart Rhythm Society.