Mark Addy

Mac MacArthur

Joseph Cross

Charlie Frost

Henry Rollins

Sid Gronic

Mika Boorem

Natalie

Andrew Lawrence

Tuck Gronic

Eli Marienthal

Spencer

Will Rothhaar

Dennis

Taylor Handley

Rory Buck

Paul F. Tompkins

Audience Member

Dweezil Zappa

John Kaplan

Jay Johnston

TV Weatherman

Googy Gress

Spencer's Dad

Wayne Federman

Policeman Dave

Trevor Rabin

Trevor (Lead Guitar)

Benjamin Brock

Alexander

Joe Rokicki

Mitch

Cameron Ferre

Pudge

Ahmet Zappa

Snowplow Driver

Steve Giannelli

Referee

Jeff Cesario

Radio Announcer

Scott Thomson

Dennis' Dad

Scott Kraft

Natalie's Dad

Jimmy Michaels

Devil's Goalie

Ajai Sanders

Interviewer

John Ennis

Truck Driver

Golden Henning

Bank Customer

Pat Crawford Brown

Scorekeeper

Mr. Chips

Chester The Dog

Denise Cheshire

In Suit Performer

Bruce Lanoil

In Suit Performer

Lili Haydn

Lili (Violin)

Louis Molino III

Lou (Drummer)

Scott Colomby

Scott (Bass)

Nakia Burrise

Bank customer (uncredited)

Mike Butters

Devil's Coach (uncredited)

Rich Knight

Club Goer (uncredited)

Jazzie Mahannah

Featured (uncredited)

Rusty Nelson

School Teacher (uncredited)

Jennifer Robertson

Brooke (uncredited)

Moon Unit Zappa

School Teacher (uncredited)