The world ofNCISis reaching a massive milestone.

And it’s not slowing down.

CBS has announced thatmore spinoffsare on the way.

Abigail Breslin - NCIS, Season 2 Episode 1 - See No Evil

Abigail Breslin on ‘NCIS’.CBS

Here are the biggest guest stars to pass throughNCISshows during the franchise’s first 1,000 episodes.

CBS

Abigail Breslin

Abigail Breslin popped up in a season 2 episode back in 2004.

This was afterSignsbut well before some of her most notable early performances in films likeLittle Miss SunshineandZombieland.

Mýa, NCIS - Season 2 Episode 16 - Pop Life;

Mya on ‘NCIS’.CBS

She had also grabbed smaller roles inChicago,Dirty Dancing: Havana Nights, andShall We Dance?

when she appeared in a season 2 episode ofNCIS.

He dropped in for back-to-back installments during season 4 and reprised the role in season 5.

Corey Stoll - NCIS

Corey Stoll on ‘NCIS’.Ron Jaffe/CBS

Susan Kelechi Watson

Like Stoll,Susan Kelechi Watson’s character appeared in threeNCISepisodes.

Wagner’s appearances began in 2010, and he was most recently on the show in 2019.

Bob Newhart

The legendaryBob Newhartpopped up during season 8 ofNCIS.

Susan Kelechi Watson, NCIS Season 5, Episode 5 - Leap Of Faith

Susan Kelechi Watson on ‘NCIS’.CBS

Lily Tomlin

The hilarious Lily Tomlin’s resume runs deep, and it includesNCIS.

The9 to 5star graced a single season 9 episode back in 2011.

Richard Foreman/CBS via Getty

Michelle Trachtenberg

Michelle Trachtenbergjumped intoNCIS: Los Angelesshortly after the end ofGossip Girl.

Meredith Eaton - NCIS

Meredith Eaton on ‘NCIS’.Sonja Flemming/CBS via Getty

TheBuffystar appeared in a single season 5 episode.

She was still First Lady at the time.

Skip Bolen/CBS via Getty

Mario Lopez

Mario Lopezstopped in for an episode ofNCIS: New Orleansin 2016.

Rocky Carroll and Paula Newsome - NCIS

Paula Newsome on ‘NCIS’.Monty Brinton/CBS via Getty

It did not qualify as her favorite mistake.

Pauley Perrette and Robert Wagner - NCIS

Robert Wagner on ‘NCIS’.Monty Brinton/CBS via Getty

Mark Harmon, right, with special guest star Gena Rowlands - NCIS

Gena Rowlands on ‘NCIS’.Michael Yarish/CBS via Getty

Jonathan Frakes - NCIS

Jonathan Frakes on ‘NCIS’.Monty Brinton/CBS

Michael Weatherly, Bob Newhart and Mark Harmon - NCIS

Bob Newhart on ‘NCIS’.Sonja Flemming/CBS via Getty

Guest star Scott Wolf - NCIS

Scott Wolf on ‘NCIS’.Cliff Lipson/CBS via Getty

Cheryl Ladd - NCIS

Cheryl Ladd on ‘NCIS’.Sonja Flemming/CBS via Getty

Lily Tomlin and Sean Murray - NCIS

Lily Tomlin on ‘NCIS’.Sonja Flemming/CBS via Getty

Jamie Lee Curtis - NCIS

Jamie Lee Curtis on ‘NCIS’.Monty Brinton/CBS via Getty

Glen Powell, NCIS Season 10 Episode 6, Shell Shock Pt 1

Glen Powell on ‘NCIS’.CBS

Colin Hanks - NCIS

Colin Hanks on ‘NCIS’.Robert Voets/CBS via Getty

Michelle Trachtenberg - NCIS

Michelle Trachtenberg on ‘NCIS’.Richard Foreman/CBS via Getty

Jeri Ryan - NCIS

Jeri Ryan on ‘NCIS’.Greg Gayne/CBS via Getty

First Lady Michelle Obama films a scene with Mark Harmon and Reiko Aylesworth for the May 3rd episode of NCIS

Michelle Obama on ‘NCIS’.Official White House Photo by Lawrence Jackson via CBS

Jon Cryer - NCIS

Jon Cryer on ‘NCIS’.Sonja Flemming/CBS via Getty

Taye Diggs - NCIS

Taye Diggs on ‘NCIS’.

Mario Lopez - NCIS

Mario Lopez on ‘NCIS: New Orleans’.Skip Bolen/CBS via Getty

Sheryl Crow - NCIS

Sheryl Crow on ‘NCIS: New Orleans’.am Lothridge/CBS via Getty

Drew Carey - NCIS

Drew Carey on ‘NCIS’.Sonja Flemming/CBS via Getty