That's what I want to know; some of those scenes I could have mistaken for actual rotoscopes from Heavy Metal itself. They've never really had full animation on this show before; "Fun Times With Weapons" looked anime-ish but was really a variation of the computer cut-and-paste we usually see.
As the parody subtly suggests, Heavy Metal is not a film for the nudity-squeamish. Like, I'll admit, myself. But I resolved to sit through it last year. Good thing, or this wouldn't have been half as funny. Captain Stern was great. That was the corrupt space guy on trial for his life, correct?
This show has a dumb episode every now and then but it's got a much better success rate than most other animated shows on the air right now.