By Kate Ward
September 04, 2010 at 06:39 PM EDT

Image Credit: Chad Buchanan/Getty ImagesComedian Robert Schimmel passed away Friday, more than one week after a car accident on Interstate Highway 10 in Phoenix left him in critical condition, the comedian’s publicist confirmed with EW. Schimmel, who frequently appeared on The Howard Stern Show, was in his daughter’s car Aug. 26 when she lost control and crashed. (She is in stable condition.) The comedian — a cancer survivor whose raunchy style helped sell books like Cancer on $5 a Day (Chemo Not Included): How Humor Got Me Through the Toughest Journey of My Life — was 60 years old.

Some of Schimmel’s friends have already spoken out about the comedian’s passing:

Jimmy Kimmel via Twitter: “Robert Schimmel was one of the funniest and nicest guys in comedy.”

Penn Jillette via Twitter: “I’m so sad about Robert Schimmel dying. I’ve been checking the news for 3 hours hoping it wasn’t true. He was very funny and wonderful.”

Jim Gaffigan via Twitter: “RIP Robert Schimmel. Really funny. Really nice. Really will be missed.”

Jeff Schimmel, Schimmel’s brother, via Facebook: “ROBERT SCHIMMEL. Son, Brother, Father, Grandfather, Comedian, Generous Man. I have always loved you, admired you, and was proud to be your biggest fan. I will never forget a single moment. R.I.P.”

Dane Cook, via Twitter: “Robert Schimmel was one of the first people in comedy to call when my folks were fighting cancer. No ego no bs no small talk just inspiration”

Joe Rogan, via Twitter: “F——–k. I loved that dude. He was SUCH a nice guy, and f–king hilarious”

Sarah Silverman, via Twitter: “‘I’m happy to say I licked the big C. And I beat cancer.’ -Robert Schimmel RIP”

Marlon Wayons, via Twitter: “The world lost a true comedian, one of the greats. He turned his pain into laughs. He was fearless. RIP ROBERT SCHIMMEL

Read more:

Comedian Robert Schimmel in serious condition after car accident