Editing Treehouse of Horror X (section)

{{Use American English|date=January 2025}}
{{Use mdy dates|date=November 2024}}
{{good article}}
{{Infobox Simpsons episode
| image      =
| caption    =
| season     = 11
| episode    = 4
| director   = [[Pete Michels]]
| writer     = "'''I Know What You Diddily-Iddily-Did'''":<br>[[Donick Cary]]<br>"'''Desperately Xeeking Xena'''":<br>[[Tim Long]]<br>"'''Life's a Glitch, Then You Die'''":<br>[[Ron Hauge]]
| production = BABF01
| airdate    = {{Start date|1999|10|31}}
| guests     = * [[Tom Arnold (actor)|Tom Arnold]] as himself
* [[Dick Clark]] as himself
* [[Lucy Lawless]] as herself
* [[Frank Welker]] as [[Ned Flanders|Werewolf Ned Flanders]]
| couch_gag  = Each member of the family dresses up as something from a previous "Treehouse of Horror" special, save for [[Lisa Simpson|Lisa]], who is an [[axe]] victim.
| commentary = [[Mike Scully]]<br>[[George Meyer]]<br>[[Ian Maxtone-Graham]]<br>[[Ron Hauge]]<br>[[Donick Cary]]<br>[[Tim Long]]<br>[[Matt Selman]]<br>[[Pete Michels]]
| prev       = [[Guess Who's Coming to Criticize Dinner?]]
| next       = [[E-I-E-I-(Annoyed Grunt)]]
}}
"'''Treehouse of Horror X'''" is the fourth episode of the [[The Simpsons season 11|eleventh season]] of the American animated television series ''[[The Simpsons]]'', and the tenth annual ''[[Treehouse of Horror]]'' episode, consisting of three self-contained segments. It first aired on the [[Fox Broadcasting Company|Fox network]] in the United States on [[Halloween]] 1999. In "'''I Know What You Diddily-Iddily-Did'''", the Simpsons cover up a murder and are haunted by an unseen witness. In "'''Desperately Xeeking Xena'''", [[Lisa Simpson|Lisa]] and [[Bart Simpson|Bart]] gain superpowers and must rescue ''[[Xena: Warrior Princess|Xena]]'' star [[Lucy Lawless]] from the [[Comic Book Guy]]'s alter ego The Collector, and in "'''Life's a Glitch, Then You Die'''", [[Homer Simpson|Homer]] causes worldwide destruction thanks to the [[Y2K bug]].

"Treehouse of Horror X" was directed by [[Pete Michels]] and written by [[Ron Hauge]], [[Donick Cary]] and [[Tim Long]]. The episode contains numerous parodies and references to horror and science fiction works, including ''[[Doctor Who]]'', ''[[I Know What You Did Last Summer]]'' and ''[[Battlestar Galactica (1978 TV series)|Battlestar Galactica]]''. It also features actress [[Lucy Lawless]] and actors [[Tom Arnold (actor)|Tom Arnold]], and [[Dick Clark]] as themselves. In its original broadcast, the episode was seen by approximately 8.7&nbsp;million viewers, finishing in 34th place in the ratings the week it aired. Since its airing, the episode received positive reviews from critics. A spin-off comic book series based on the segment "Desperately Xeeking Xena", entitled ''[[Simpsons Super Spectacular]]'', has been published by [[Bongo Comics]] since 2005.<ref name="UGO" />