| Series
|
Role
|
Episode
|
Airdate
|
| General Electric Theater |
Friedman |
5x29 - Bitter Choice |
April 21, 1957
|
| Have Gun - Will Travel |
Boldt |
1x38 - Deliver the Body |
June 7, 1958
|
| The Jack Benny Program |
|
9x05 - Bachelor TV Lives |
November 16, 1958
|
| Peter Gunn |
Speaker |
1x35 - Kill from Nowhere |
May 25, 1959
|
| Bat Masterson |
Frank Holloway |
2x36 - Blood on the Money |
June 23, 1960
|
| The Untouchables |
Gunther, hood |
2x06 - A Seat on the Fence |
November 24, 1960
|
| Hennesey |
Chief Petty Officer |
2x15 - The Specialist |
January 23, 1961
|
| Stoney Burke |
Leo |
1x12 - Bandwagon |
December 17, 1962
|
| The Outer Limits |
GIA Agent |
1x19 - The Invisibles |
February 3, 1964
|
| The Wild Wild West |
Mason |
1x05 - Night of the Casual Killer |
October 15, 1965
|
| Ben Casey |
Lieutenant Bentley |
5x08 - Then I, and You, and All of Us Fall Down |
November 1, 1965
|
| Honey West |
Mr. Crimm |
1x08 - In the Bag |
November 5, 1965
|
| Get Smart |
Rudolph |
1x09 - Satan Place |
November 13, 1965
|
| The Munsters |
Manikoo |
2x18 - Heap Big Herman |
January 20, 1966
|
| The F.B.I. |
Ghost |
2x01 - The Price of Death |
September 18, 1966
|
| Love on a Rooftop |
Junk Shop Owner |
1x04 - The Big Brass Bed |
September 27, 1966
|
| Get Smart |
Luden |
2x07 - The Decoy |
October 29, 1966
|
| That Girl |
Guard |
1x18 - These Boots Weren't Made for Walking |
January 12, 1967
|
| Get Smart |
Vogel |
3x04 - The Spirit Is Willing |
October 14, 1967
|
| Judd for the Defense |
Rex |
2x08 - The Gates of Cerberus |
November 15, 1968
|
| Bonanza |
Fred Gaskell |
11x25 - Caution: Easter Bunny Crossing |
March 29, 1970
|
| All in the Family |
Billy Pendergast |
1x12 - Success Story |
March 30, 1971
|
| Ironside |
Frank Bender |
5x15 - But When She Was Bad, ... |
December 30, 1971
|
| Bonanza |
Fancher |
14x03 - Heritage of Anger |
September 19, 1972
|
| The Mod Squad |
Burns |
5x14 - Belinda -- End of Little Miss Bubble Gum |
December 7, 1972
|
The Bob Newhart Show
(credited as Len Lessor) |
Mr. Schwab |
2x19 - Clink Shrink |
January 26, 1974
|
| Medical Center |
Sam |
6x11 - Three on a Tightrope |
November 25, 1974
|
| The Rockford Files |
Colby |
1x18 - Say Goodbye to Jennifer |
February 7, 1975
|
| McMillan & Wife |
Benny Carr |
5x07 - Point of Law |
March 7, 1976
|
| Quincy, M.E. |
De Groot |
4x01 - The Last Six Hours |
September 21, 1978
|
| Simon & Simon |
Slater |
1x01 - Details at Eleven |
November 24, 1981
|
| Remington Steele |
Anthony Torrance |
2x09 - Steele Knuckles and Glass Jaws |
November 29, 1983
|
| Airwolf |
Stunt Show Villian |
3x08 - Annie Oakley |
November 16, 1985
|
| Falcon Crest |
Professor McCloud |
7x21 - False Faces |
March 18, 1988
|
| Seinfeld |
Uncle Leo |
2x02 - The Pony Remark |
January 30, 1991
|
| Seinfeld |
Uncle Leo |
3x03 - The Pen |
October 2, 1991
|
| Seinfeld |
Uncle Leo |
4x04 - The Ticket |
September 16, 1992
|
| Seinfeld |
Uncle Leo |
4x05 - The Wallet |
September 23, 1992
|
| Seinfeld |
Uncle Leo |
4x06 - The Watch |
September 30, 1992
|
| Seinfeld |
Uncle Leo |
5x03 - The Glasses |
September 30, 1993
|
| Seinfeld |
Uncle Leo |
5x17 - The Wife |
March 17, 1994
|
| Seinfeld |
Uncle Leo |
6x17 - The Kiss Hello |
February 16, 1995
|
| Seinfeld |
Uncle Leo |
6x20 - The Doodle |
April 6, 1995
|
| Seinfeld |
Uncle Leo |
7x16 - The Shower Head |
February 15, 1996
|
| The John Larroquette Show |
Preacher |
3x20 - Independence Day |
April 23, 1996
|
| Seinfeld |
Uncle Leo |
8x05 - The Package |
October 17, 1996
|
| Boy Meets World |
Arnie |
4x13 - B & B's B'n B |
January 10, 1997
|
| Mad About You |
Uncle Arnold |
5x15 - Citizen Buchman |
February 18, 1997
|
| Seinfeld |
Uncle Leo |
9x17 - The Bookstore |
April 9, 1998
|
| Caroline in the City |
Waiter |
3x22 - Caroline and the Sandwich |
April 27, 1998
|
| Seinfeld |
Uncle Leo |
9x23 - The Finale (1) |
May 14, 1998
|
| Sabrina, the Teenage Witch |
Eugene |
5x12 - Tick-Tock Hilda's Clock |
January 19, 2001
|
| Quintuplets |
Morty |
1x12 - Battle of the Bands |
September 29, 2004
|
| ER |
Woodie Evans |
12x08 - Two Ships |
November 17, 2005
|
| Cold Case |
Elmer Gibbins '07 |
5x07 - World's End |
November 4, 2007
|
| Castle |
Elderly Man |
1x02 - Nanny McDead |
March 16, 2009
|
