Complex sentence: On August 1,2008, Adult Swim had a retro night, an all night marathon of shows featured on Adult Swim during their 2001 and 2002 era, two of the earlier episodes of "The Brak Show" were aired during the marathon.
Split into simpler sentences: On August 1,2008, Adult Swim had a retro night, an all-night marathon of shows featured on Adult Swim in 2001 and 2002. Two of the earlier episodes of "The Brak Show" were aired during the marathon.