Judd Apatow, Will Arnett on 'The Simpsons' Sunday

Remember -- however vaguely in the recesses of your pop-culture-cluttered mind -- that Judd Apatow was going to guest-voice an episode of "The Simpsons" this season along with Will Arnett, and that even Rob Halford of Judas Priest was, improbably enough, making a cameo too?

And do you also remember that this episode -- entitled, "Steal this Episode" -- was to be about  Homer's frustration with going to movies, and that, therefore, he got into the piracy business? 

You don't remember? Ah well. 

In any event, we have clips -- alas, brief, but surely representative. Fox sent out a couple last week, but the ones of Apatow and Arnett -- the last two here -- are brand-spanking new.

Airs this Sunday at 8, and Seth Rogen, Leslie Mann, Channing Tatum and Paul Rudd also guest.