popular short series according to a vote held in 1995 and eventually became the first spin-off of What a Cartoon! in 1996. Two more series based on shorts, Johnny Bravo and Cow and Chicken, premiered in 1997, and The Powerpuff Girls became a weekly half-hour show in 1998. Courage the Cowardly Dog (spun off from the Oscar-nominated short The Chicken from Outer Space) followed as the final spin-off in 1999. In addition, the Cow and Chicken short I Am Weasel eventually was also spun off into a separate series: in all, six cartoon series were ultimately launched by the What a Cartoon! project, any one of which earned enough money for the company to pay for the whole program. In addition to the eventual spin-offs, the What a Cartoon! short Larry and Steve by Seth MacFarlane featured prototypes of characters that would later go on to become MacFarlane's massively successful Family Guy. The What a Cartoon! project and its assorted spin-offs brought Cartoon Network more commercial and critical success, and the network became an animation industry leader as the 1990s drew to a close. In 2001, coinciding with the death of William Hanna, Hanna-Barbera Productions absorbed into Warner Bros. Animation and Cartoon Network opened its own production arm, Cartoon Network Studios, in Burbank, as the rightful Hanna-Barbera successor to produce original programming for the network and future projects. Two What a Cartoon! shorts, Wind-Up Wolf and Hard Luck Duck, were the last cartoon shorts directed and produced by co-founder and co-chairman William Hanna. In addition, What a Cartoon! and spin-offs were the final original productions released by Hanna-Barbera. Creator of The What a Cartoon! Show, Fred Seibert, left Hanna-Barbera in late 1996 to open up his own studio, Frederator Studios, and has persistently continued in the tradition of surfacing new talent, characters, and series with similar shorts "incubators", including (as of 2015) Oh Yeah! Cartoons (Nickelodeon, 1998), Nicktoons Film Festival (Nickelodeon, 2004), The Meth Minute 39 (Channel Frederator, 2008), Random! Cartoons (Nickelodeon/Nicktoons, 2008), Too Cool! Cartoons (Cartoon Hangover, 2012), and GO! Cartoons (Cartoon Hangover, 2016). Oh Yeah! Cartoons showcased What a Cartoon! alumni (Butch Hartman, Rob Renzetti) and launched several successful Nickelodeon series, including The Fairly OddParents, ChalkZone and My Life as a Teenage Robot. Frederator Studios also launched an animation film festival, Nicktoons Film Festival from 2004 to 2009; only to have The Mighty B! greenlit as a series