Stewart started as a stand-up comedian but branched into television as host of Short Attention Span Theater for Comedy Central. He went on to host You Wrote It, You Watch It (1992–1993) and then The Jon Stewart Show (1993–1995), both on MTV, until The Jon Stewart Show was retooled, dropped by the network and moved to syndication. He has also appeared in several films, including Big Daddy (1999) and Death to Smoochy (2002), but did few cinematic projects after becoming host of The Daily Show in 1999, where he also was a writer and co-executive producer. After Stewart joined it, The Daily Show steadily gained popularity and critical acclaim, and during his tenure, won 22 Primetime Emmy Awards, two Grammy Awards, and was nominated for news and journalism awards. In 2022, he received the Mark Twain Prize for American Humor. Stewart hosted the 78th and 80th Academy Awards. He is the co-author of America (The Book): A Citizen's Guide to Democracy Inaction, one of the best-selling books in the US in 2004,[2] and Earth (The Book): A Visitor's Guide to the Human Race, released in 2010.
Since leaving The Daily Show, Stewart has mostly maintained a low profile in entertainment industry circles, but has used his celebrity and voice in a sustained advocacy for 9/11 first responders[3] and war veterans' health benefits. In 2019, he received the New York City Bronze Medallion for his "tireless advocacy, inspiration, and leadership (helping to) pass the permanent authorization of the September 11th Victim Compensation Fund Act"