Complex sentence: That segment was pitched to Comedy Central and Discovery Channel in the early 2000s, and Discovery decided it wanted to spotlight the grittier, grimier part of the segment subsequently created "Dirty Jobs".
Split into simpler sentences: That segment was pitched to Discovery Channel in the early 2000s. Ultimately Discovery decided it only wanted to feature the dirty part of the segment and made a show out of it, which would become "Dirty Jobs".