11 Most Memorable 'Blue Bloods' Guest Stars (PHOTOS)

Meredith Jacobs

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)

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