11 Most Memorable 'Blue Bloods' Guest Stars (PHOTOS)
Peter Hermann
Hermann recurs as Jack Boyle, Erin's ex-husband and Nicky's father.
Stacy Keach
The archbishop has known the Reagans for years and even married Jamie and Eddie.
Treat Williams
Lenny Ross is Frank's old partner who usually needs help from the commissioner when he shows up.
Callie Thorne
Maggie is the medium who helps Danny and Baez with cases.
Aasif Mandvi
Erin had to deal with District Attorney Samar Charwell in Season 9.
Kirk Acevedo
Baez lost her estranged brother during a case.
Bebe Neuwirth
Frank often clashed with Kelly Peterson.
Kevin Dillon
Danny's brother-in-law has a habit of getting into trouble with the law.
David Ramsey
(Former) Mayor Carter Poole often clashed with Frank.
Lou Diamond Phillips
Danny found common ground with his enemy, Luis Delgado, as the same man was responsible for their wives' deaths.
Bobby Cannavale
Charles Rosselini was Erin's boss in Season 1.Blue Bloods celebrates its 200th episode Friday with an episode that brings back two notable guest stars. (One of them even gets the honor of joining the family for Sunday dinner, a first for an outsider.)
And over the nine seasons of the CBS drama so far, there have been numerous key guest stars, from those who have clashed with Frank (Tom Selleck) over the years to the man who married Jamie (Will Estes) and Eddie (Vanessa Ray) offscreen in May's finale.
8 'Blue Bloods' Characters We Hope Return in Season 10 (PHOTOS)
We'd like to catch up with these characters when the CBS procedural drama returns in September.
Click through the gallery above for a look back at some of the more memorable guest stars as we celebrate the show's milestone.
Blue Bloods, Season 10 Premiere, Friday, September 27, 10/9c, CBS
