- Maternal grandfather Harry F. Kelly was governor of Michigan from 1943 to '47.
- Named for his uncle Brian Kelly, who played the ranger on the TV series Flipper; and another uncle, an artist who went by his middle name, d'Arcy.
- Debuted on Broadway in Blood Brothers in 1993.
- Released his debut solo album, From Christmas Eve to Christmas Morn, in 2004, featuring the single "Michigan Christmas."
- Spent 90 minutes getting into a fat suit and prosthetic makeup for every performance of Shrek: The Musical.
- Performed at the White House for President Obama as part of the 2010 PBS special A Broadway Celebration.
- Supports and performs for the Field Neurosciences Institute in his hometown of Saginaw, MI.