Dexter's Laboratory

Huber had shown Tartakovsky's unfinished student film to a then-nascent Cartoon Network and wanted Tartakovsky to expand the concept into a seven-minute storyboard.

"Changes" premiered on February 26, 1995, as part of Cartoon Network's animation showcase series World Premiere Toons.

In September 1995, Turner Entertainment Co. announced the series greenlight of Dexter's Laboratory, becoming the first of sixteen shorts to earn the vote of approval based on feedback from focus groups, phone lines, the America Online reaction, the ten-city "Dive-In Theater" tour, and the "Cool Toons Mobile".

After Tartakovsky and his former classmates McCracken and Rudish finished "Changes" and The Powerpuff Girls' debut short "Meat Fuzzy Lumpkins" for World Premiere Toons, they proceeded to work on the second short film for Dexter's Laboratory titled "The Big Sister".

When Dexter's Laboratory received a series greenlight by former Cartoon Network president Betty Cohen and former television producer Mike Lazzo, Tartakovsky became one of the youngest animation directors during the time period at the age of 27.

During his time on The Critic, Tartakovsky received a phone call from Larry Huber, who had been a producer on 2 Stupid Dogs.