David Lawrence Groh (May 21, 1939 - February 12, 2008) was an American actor best known for his portrayal of Joe Gerard in the 1970s television series Rhoda, opposite Valerie Harper.
Description above from the Wikipedia article David Groh, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Every Dog Has Its Day
As Jack, Sr.
The Cowboy and the Movie Star
As Adrian Friar
The Stöned Age
As Dad
Crash and Burn
As Petek Hellman
Victory at Entebbe
As Benjamin Wise
Two-Minute Warning
As Al
Crazylove
As Mr. Santalucci
Acts of Betrayal
As Martin Crispin
Jelly
As Robert Gills
A Hero Ain't Nothin' But a Sandwich
As Cohen
Jane Doe: The Harder They Fall
As Melville Horning
Blowback
As Capt. Barnett
Take My Advice: The Ann and Abby Story
As Abe
Red Hot Shot
As Don Carbo
Tourist
As Jim Huggins
Menu for Murder
As Harry Alberts
Broken Vows
As Michael Drumm
This Is Kate Bennett...
As Jeff Bennett
The Child Stealer
As Jack Farnham
Don't Ask Me, Ask God
As Father
Power
As Tony Guidice
The Ringer
The Tragedy of King Lear
As Edmund
Murder at the Mardi Gras
As Harry Benson
Last Exit to Earth
As Bendix
Expecting Love
As Used Car Dealer
Illegal in Blue
As Frank Jacobi
White Cargo
Spoiler
As Uncle Hutchy
The Confidence Man
As The Lieutenant
The Irish Whiskey Rebellion
As Maxie
Smash-Up on Interstate 5
As Dale
Hotshot
As Jerry Norton
L.A. Law
As Dr. Stephen Harbaugh
Murder, She Wrote
As Gordon Tully
Tales from the Darkside
As Angel / Aldo Anderson
Law & Order
As Dr. Jacob Lowenstein
Kate & Allie
Rhoda
As Joe Gerard
Trapper John, M.D.
Simon & Simon
Girlfriends
Walker, Texas Ranger
As Vince Termin
Hotel
Mike Hammer, Private Eye
The Mary Tyler Moore Show
The X-Files
As Jacob Weiss
Melrose Place
As Vince Parezi
Jake and the Fatman
JAG
As Dad Harridan
Baywatch
As Frank Larkin
Hunter
As Ken Martin
The Huntress
Police Story
Matt Houston
MacGruder and Loud
As Bass
Cher
As Self / Adam-Eve / Man on Bench
Another Day
The Dream Merchants
As Rocco Salvatore
The Dean Martin Celebrity Roasts
As Self
Black Scorpion
As Lt. Stan Walker
The Mike Douglas Show
As Self - Co-Host
Finder of Lost Loves
As Brad Evans
The Love Boat
As Bert Fredericks
Buck Rogers in the 25th Century
As Major Duke Danton
V.I.P.
As Don Franco