Film Dope

We kick of Season 13 with one of those annual Halloween specials which features three stories:

Hex And The City
Homer receives a gypsy curse which brings bad luck to everybody he loves, after he disrespects her beliefs.
House Of Whacks
The Simpsons live in the future where a seemingly friendly robot (voiced by Pierce Brosnan) has lustful intentions after Marge.
Wiz Kids
Mr. Burns employs Bart to publically disgrace Lisa during a school play by using magic, which he initially is happy to do but later regrets.

*Read a more detailed summary for this episode on Wiki Simpsons