From the "Things Very Few People Asked For" department comes word from Norman Reedus that he recently met with Sean Patrick Flannery and Troy Duffy to discuss a third film in the The Boondock Saints saga. Reedus, who stars in AMC's The Walking Dead, said "it's definitely in the works. Look for it. It's gonna be crazy."
The first sequel, The Boondock Saints II: All Saints Day, released in 2009 -- a scant ten years after the 1999 original. So, in other words, don't hold your breath.