Question:  Comic Relief USA was a non-profit charity organization hosted in part by a stand-up comedian who rose to fame in what television series?

Context articles: Sweet Relief Musicians Fund
Comic Relief Does The Apprentice
The Zakat Foundation
OCEF
Comic Relief USA
Sultan bin Abdulaziz Al Saud Foundation
Robin Williams
Comic Relief, Inc.
Comic Relief
Islamic Relief USA

Sweet Relief Musicians Fund is a non-profit charity that maintains a financial fund from which professional musicians can draw when in need of medical care or financial needs.
 Initially intended as a one-time CD launch benefit for Victoria Williams, Sweet Relief has evolved into a charity organization that relies on donations from artists and the public as a general fund to all professional musicians in need.
 The fund provides financial assistance to all types of career musicians who are struggling with their finances while facing illness, disability, or age-related problems.
Comic Relief Does The Apprentice is a special celebrity version of British reality television series "The Apprentice", produced to raise money for Comic Relief.
 The first edition aired in March 2007, and the second in March 2009.
 Five male celebrities and five female celebrities took part in the show to complete a designated task.
 The task in the 2007 edition was to run a funfair.
 The show first aired on BBC One at 2100 GMT on 15 March 2007 and concluded on 16 March 2007 during the main Comic Relief programme.
 The first episode of the show received strong viewing figures of 6.72 million.
 It became the fifth most watched programme on BBC One that week.
 The show returned on 12 March 2009 for the Comic Relief 2009 event, where the woman's team triumphed.
 This would prove to be the final charity "Apprentice" series, in part because of the time needed each year to film the newly commissioned "Junior Apprentice" series.
Zakat Foundation of America (ZF) is a Chicago-based, Muslim non-profit dedicated to alleviating the immediate needs of the poorest communities, as well as providing emergency relief, post-disaster rehabilitation, sustainable development, education, healthcare, orphan sponsorship, and seasonal programs such as Ramadan Iftars and Udhiya/Qurbani.
 Zakat Foundation of America is registered under 501(c)(3) as a non-profit charity organization; therefore all donations are tax exempt.
Overseas China Education Foundation (OCEF) is an independent, non-political, non-religious and non-profit charity organization, founded in October 1992 by a group of Chinese students and scholars in California.
 Formerly known as SOS China Education Fund (SOSCEF), OCEF changed to its current name and was registered in Texas in April 2001 as a 501(c)(3) non-profit organization.
 OCEF's sole mission is to help underprivileged children in impoverished rural areas of China receive education and improve the quality of education in rural China.
Comic Relief USA was a non-profit charity organization whose mission is to raise funds to help those in need—particularly America's homeless.
 It has raised and distributed nearly US$50 million toward providing assistance—including health care services—to homeless people throughout the United States.
 Although Comic Relief's charity work is continuous, its fundraising events were held and televised at irregular intervals—and primarily by Home Box Office (HBO), with comedians Robin Williams, Billy Crystal, and Whoopi Goldberg as the hosts each time.
 They—along with many other comedians, celebrities, and occasional politicians—perform various segments—both general-purpose and specific to homelessness—of standup comedy, sketch comedy, speeches, live music, and impressions of persons and characters—all in order to entertain and enlighten.
 There are also documentary segments dealing with real-life problems of homeless people, in order to raise awareness of not only the grim realities but also how many hard-working "ordinary" people can wind up or grow up homeless.
 In exchange for contributions exceeding certain key amounts, T-shirts, sweatshirts and other merchandise are typically for sale.
Sultan bin Abdulaziz Al Saud Foundation is a non-profit charity organization in Saudi Arabia set up and funded by late Crown Prince Sultan in 1995.
 However, little is known about its activities and priorities as those of other royal charity organizations.
Robin McLaurin Williams (July 21, 1951 – August 11, 2014) was an American stand-up comedian and actor.
 Starting as a stand-up comedian in San Francisco and Los Angeles in the mid-1970s, he is credited with leading San Francisco's comedy renaissance.
 After rising to fame as Mork in "Mork & Mindy" (1978–82), Williams established a career in both stand-up comedy and feature film acting.
 He was known for his improvisational skills.
Comic Relief USA, previously known as America Gives Back Inc., is an operating 501(c)(3) American charity.
 It is an independent sister organization to the UK charity Comic Relief and is not connected to the former American charity Comic Relief USA.
 Comic Relief USA.
 is notable for the 2015 US launch of Red Nose Day, a telethon hosted by NBC based closely on the UK example of the same name, Red Nose Day.
Comic Relief is an operating British charity, and an independent sister organization of the United States-based Comic Relief Inc. Founded in 1985 by the comedy scriptwriter Richard Curtis and comedian Lenny Henry in response to famine in Ethiopia.
 The highlight of Comic Relief's appeal is Red Nose Day, a biennial telethon held in March, alternating with sister project Sport Relief.
Islamic Relief USA (IRUSA), based in Alexandria, Virginia, is a non-profit 501(c)(3) humanitarian agency and member of the Islamic Relief Worldwide group of organizations.
 IRUSA was founded in California in 1993.
 In addition to international relief and development initiatives, Islamic Relief USA also sponsors and funds domestic projects ranging from emergency disaster responses to assisting the American homeless population and supporting those who cannot afford basic healthcare.
 Besides the Virginia headquarters, IRUSA maintains regional offices in Illinois, New Jersey, Texas, Florida and two in California.