Tributes have been pouring in for Chicago-born comedian Garry Shandling, who has died of "a massive heart attack" at the age of 66.
The award-winning comic created Garry Shandling's Show in 1986 and pioneered a form of docudrama comedy which influenced Britain's Ricky Gervais and Steve Coogan's Alan Partridge character, among others.
Noted for breaking the fourth wall between performer and audience, the show featured Shandling essentially playing himself and often speaking directly to the camera.
Shandling followed the Emmy award-nominated series with The Larry Sanders Show in 1992.
Considered by leading critics and industry figures as his comic masterpiece, it starred Shandling as an egotistical late-night TV host.
The HBO series also featured celebrities playing parodies of themselves.
Among the many honours the Emmy Award-winning series took home was a Bafta for 1999 outstanding international programme and two British Comedy Awards.
Recently seen in Jerry Seinfeld's web-series Comedians In Cars Getting Coffee, Shandling is featured in The Jungle Book movie, which is set to be released in April.
He also appeared in Captain America: Civil War.
On his official Twitter account, The Office creator Gervais tweeted: "RIP the great Garry Shandling. Surely, one of the most influential comedians of a generation."
Sunday, my longtime friend Garry Shandling was here, making every1 laugh. I loved him. I'll miss our talks the most. pic.twitter.com/Ud8AQXNBXN— Kathy Griffin (@kathygriffin) 24 March 2016
Loved seeing there! https://t.co/JxwsjhryYy— Steve Martin (@SteveMartinToGo) 25 March 2016
R.I.P. Garry Shandling. I am so saddened to hear this. Brilliantly funny and such a great guy. He will be so missed.— Albert Brooks (@AlbertBrooks) 24 March 2016
Shocked and saddened to hear about Garry Shandling's sudden death. I was honored to get to work with him. He will be missed.— Ellen DeGeneres (@TheEllenShow) 24 March 2016
Garry Shandling was one of the most brilliant people I have ever known. A shocking huge loss.— Billy Crystal (@BillyCrystal) 24 March 2016
Garry Shandling was as kind and generous as he was funny and that is saying a lot.— Jimmy Kimmel (@jimmykimmel) 24 March 2016
I can't believe Garry is gone. I can't wrap my head around it. #RIPGarryShandling— Margaret Cho (@margaretcho) 25 March 2016
Saddened over Garry Shandling. He was a comedy idol of mine. He leaves behind the greatest single-camera comedy of all time. #LarrySanders— Seth MacFarlane (@SethMacFarlane) 24 March 2016
Goodbye Gary Shandling thank you for your kindness and your generosity and for making me laugh so damn much— Amy Schumer (@amyschumer) 24 March 2016
Garry Shandling was one of my comedic heroes. His support of my writing was a huge boost. I will always be grateful for it. Shocked and sad— Rob Lowe (@RobLowe) 24 March 2016