Television:
* Law & Order (1990-2010, 2022-present): This is arguably his most famous role, playing Captain Donald Cragen for 22 seasons. He was a beloved and consistent presence on the show, providing stern yet supportive leadership.
* The Days and Nights of Molly Dodd (1987-1991): Florek played the charming, supportive boyfriend, Vince Lombardi, in this critically acclaimed sitcom.
* The Equalizer (1985-1989): He appeared in a recurring role as Detective Miller, a recurring adversary to Robert McCall (Edward Woodward).
* Santa Barbara (1984-1993): Florek portrayed the complex and sometimes villainous character, Mason Capwell, on this popular soap opera.
* The Wire (2004): He had a guest starring role as Deputy Commissioner Ervin Burrell, a corrupt but intelligent police official.
* The Blacklist (2013-present): Florek played the role of Donald Ressler in this popular crime thriller series.
* The Good Wife (2009-2016): He had a guest-starring role as a judge in this legal drama.
* Chicago Fire (2012-present): He has made guest appearances in this popular drama series.
Film:
* Mystic Pizza (1988): Florek played the role of Bill, a romantic interest to one of the main characters.
* The House of Yes (1997): This dark comedy featured Florek in a supporting role.
* The Bone Collector (1999): He played Detective Paulie, a key character in this thriller film.
* The Brave One (2007): Florek had a smaller role in this action thriller.
This is not an exhaustive list, but it highlights some of his most significant roles in movies and television. Florek has continued to work steadily in the industry, showing his range and versatility as an actor.