His cartoons are distributed through King Features Syndicate to 400 newspapers nationwide, and have appeared in such publications as The New York Times, Chicago Sun-Times, San Diego Union-Tribune, The Atlanta Journal-Constitution, USA Today and on CNN. One of his cartoons can also be spotted in the Alexander Payne film, "Election", but you have to look quickly. Additionally, his original cartoons have been collected by notables such as Warren Buffett and Oprah. In 2010, two of Koterba's cartoons flew aboard the space shuttle Discovery, only the second time any cartoons have flown into space since sketches of Snoopy flew aboard Apollo 10.
His memoir, "Inklings" (Houghton Mifflin Harcourt) traces Koterba’s path on his journey to become a cartoonist, and more so, to rediscover the love of his family that was there from the start. "Inklings" was named a Chicago Tribune Favorite Nonfiction book of 2009. Entertainment Weekly called "Inklings" “…a powerful and moving portrait of an artist.”
He is lead singer, guitarist and songwriter for the Prairie Cats, a swing and jump-blues band he formed in 1998. The Prairie Cats have performed at the South by Southwest Music Festival, and at the Derby Lounge in Hollywood, and have been included on several Sony/BMG compilations in Europe alongside the likes of Tony Bennett, Natalie Cole and Frank Sinatra.