Irishman Aidan Gillen is the latest non-American to become part of the cast, joining Englishmen Dominic West and Idris Elba.
Robert Wisdom, Seth Gilliam, Domenick Lombardozzi, Jim True-Frost, Corey Parker Robinson, J.D. Williams and Michael Kenneth Williams all graduate to the opening credits.
The opening demolition of some of the buildings in the housing projects was all done with CGI. The buildings still stand.
The baseball game Bunk and McNulty are attending took place on May 5th, 2004 between the Orioles and Chicago White Sox. Bunk had to leave for work in the bottom of the 5th inning, just after Brian Roberts was thrown out at home plate. The White Sox won 6-5.