Metalocalypse Season 1 Episode 10 : Fat Kid at the Detharmonic (a.k.a. FatKlok)

Upon learning that they've once again earned too much money over the past year, the band tries to "donate" as much as they can to charity as a tax write-off. The guys also unwisely attempt fatherhood and play a landmark concert with the London Philharmonic Orchestra which ends with a killer laser light show.