| "Billy's Bucket List" | |
|---|---|
| Adventure Time episode | |
 | |
| Episode no. | Season 5 Episode 52 |
| Directed by | |
| Written by | Ako Castuera Jesse Moynihan |
| Story by | Kent Osborne Pendleton Ward Jack Pendarvis Adam Muto |
| Production code | 1014-159 |
| Original air date | March 17, 2014 |
| Running time | 11 minutes |
| Guest appearances | |
| |
"Billy's Bucket List" is the final episode of the fifth season of the American animated television series Adventure Time. The episode was written and storyboarded by Ako Castuera and Jesse Moynihan, from a story by Kent Osborne, Pendleton Ward, Jack Pendarvis, and Adam Muto. It originally aired on Cartoon Network on March 17, 2014. The episode guest stars Lou Ferrigno, Andy Samberg, and Mark Hamill; Castuera herself also voiced a character.
The series follows the adventures of Finn (voiced by Jeremy Shada), a human boy, and his best friend and adoptive brother Jake (voiced by John DiMaggio), a dog with magical powers to change shape and grow and shrink at will. In this episode, Finn finds Billy's (voiced by Ferrigno) bucket list and decides to complete the unfinished items, as a tribute toward the fallen hero. After completing most of the items, including giving Billy's ex-girlfriend Canyon (voiced by Castuera) one last motorcycle ride, and conquering his fear of the ocean, an apparition of Billy appears to Finn, telling him that Finn's biological father is still alive.
The episode was the last to feature Castuera as a storyboard artist until her return to the series during the seventh season; in the interim time, she focused on her art career. This episode also marked the last time Nate Cash was credited as supervising director; he left to direct the animated mini-series Over the Garden Wall. "Billy's Bucket List" was met with critical acclaim, with one reviewer complimenting the episode's cliffhanger and emotional growth. In addition, the episode was watched by 2.335 million viewers.
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