Personal Life: Collins was born in Boston, Massachusetts. He has said that his surname, Krushnic, "goes back six generations in Canada and we’re not sure where they came from". Before acting, he interned for four months at the White House during the Clinton Administration in the Office of Presidential Personnel. Collins attended Northfield Mount Hermon School and the University of Chicago, where he studied social theory.
In 2002, Collins married Victoria Vantoch. They have a son, West Anaximander Collins (born September 23, 2010), and a daughter, Maison Marie Collins (born September 25, 2012).
Collins is a published poet. His poems, including "Baby Pants", and "Old Bones" can be found in the 2008 edition of the Columbia Poetry Review #21.