He is best known for playing a caveman in a popular series of GEICO commercials. He played the part of Maurice in the short-lived Cavemen sitcom on ABC. Other credits to him are Hide (2003), for which he was the director, producer, and co-author in addition to being a cast member; parts in Sneakers and Rob Zombie's Halloween II as Uncle Seymour, The Lords of Salem and 31; and roles in TV series Flaked, Arrest and Trial, Philly, and Profiler. He appeared in the second season of Agents of S.H.I.E.L.D. as David Angar, the Marvel Cinematic Universe version of Angar the Screamer. Description above from the Wikipedia article Jeff Daniel Phillips licensed under CC-BY-SA, full list of contributors on Wikipedia.
Glow
(Roland)
Unknown
(Iron Cross)
Elsewhere
(Officer Berg)
Sneakers
(Playtronics Perimeter Guard)
The Lords of Salem
(Herman Whitey Salvador)
Svengoolie Uncrypted
(Himself)
Christmas Bloody Christmas
(Sheriff Monroe)
The Munsters: Return to Mockingbird Lane
(Herman / Self)
Legend of the Lizard
(The Caveman)
Resurrection Road
(General Craven)
The Weight of Blood and Bones
(Sol White)
Cursed in Baja
31
(Roscoe Pepper)
Happy Birthday
(Frank Zappa)
Psychopaths
(Storyteller)
The Ice Cream Truck
(Delivery Man)
Halloween II
(Howard / Uncle Seymour Coffins)
Peephole
(Psychological Mugger)
Mosquito
(Newt)
3 from Hell
(Warden Virgil Harper)
Becoming
(Glen Hemming)
Satanic Panic
(Steve Larson)
Faster
(Cohort #2)
Undercover Brother 2
(Hank)
To Hell and Back: The Making of 3 From Hell
(Himself)
An American Pickle
(Actor (uncredited))
Zodiac
(Informant)
The Munsters
(Herman Munster / Zombo / Shecky Von Rathbone)
As You Were
(The Foreman)
Cavemen
Beyond Belief: Fact or Fiction
(Kyle (segment "The Diner"))
Marvel's Agents of S.H.I.E.L.D.
(David A. Angar)
Westworld
(Tenderloin)
Flaked
(Uno)
The Gifted
(Tex / Fade)
FutureStates
(The Foreman)