
Acting
Mark Blum (May 14, 1950 - March 26, 2020) was an American actor in movies, on television and stage. He found success with a lead role as Gary Glass in the 1985 film Desperately Seeking Susan, which he followed up the next year with a supporting role as Richard Mason in Crocodile Dundee. He had a regularly recurring role as Union Bob on the Amazon Prime series Mozart in the Jungle from 2014 to 2018.
He was married to actress Janet Zarish from 2005 until his death in 2020 from COVID.

Human Capital
as Rex

Sister of the Groom
as Nat

Victor in Paradise
as Martin

Love Is Blind
as Dr. Klienart

Coin Heist
as Mr. Smerconish

No Pay, Nudity
as Leon/Lester's Agent

How He Fell in Love
as Henry
Blumenthal
as Saul Blumenthal
A Wife Alone
as George

I Don't Know How She Does It
as Lew Reddy

Almost Family
as Dr. Lewis · 1 ep.

You
as Mr. Mooney · 4 ep.

Succession
as Bill · 2 ep.

The Good Fight
as Julius Kreutzer · 1 ep.

Billions
as Dr. Mark Rutenberg · 1 ep.

Difficult People
as Rabbi Schecter · 1 ep.

Mozart in the Jungle
as Union Bob · 30 ep.

Elementary
as Irvin Langstrom · 1 ep.

The Good Wife
as Julius Kreutzer · 1 ep.

Mercy
1 ep.
Mozart in the Jungle
2014