Movies:
* Screenplays:
* Mirrormask (2005) - A fantasy film he co-wrote with Dave McKean, based on his own graphic novel.
* Coraline (2009) - Adapted from his own novel, which he also produced.
* Stardust (2007) - Based on his own novel, he also served as a co-producer.
* Beowulf (2007) - He co-wrote the screenplay for this animated film.
* Story or Ideas:
* The Graveyard Book (2014) - He was involved in developing the story for this animated adaptation of his own novel.
* The Sandman (2022) - Adapted from his comic book series, he served as co-writer and executive producer.
* American Gods (2017-2021) - Based on his novel, he acted as executive producer and writer.
* Good Omens (2019-present) - Co-created with Terry Pratchett, he also co-wrote and executive produced the television series.
* Acting:
* The Day I Met Elvis (1998) - He had a small role as the Narrator in this short film.
* Neverwhere (1996) - He had a brief appearance in this miniseries, based on his novel.
Television:
* Television Shows:
* Neverwhere (1996) - A miniseries based on his novel, he also served as co-writer.
* The Sandman (2022) - Adapted from his comic book series, he served as co-writer and executive producer.
* American Gods (2017-2021) - Based on his novel, he acted as executive producer and writer.
* Good Omens (2019-present) - Co-created with Terry Pratchett, he also co-wrote and executive produced the television series.
* Anansi Boys (2022-present) - Based on his novel, he served as executive producer and writer.
* The Truth is a Cave in the Black Mountains (2014) - He co-wrote this episode for the anthology series "Black Mirror".
* Animation:
* The Graveyard Book (2014) - He served as executive producer for this animated adaptation of his novel.
* The Sandman (2022) - He served as executive producer for the animated short film "The Sandman: A Dream of a Thousand Cats."
Note: This list may not be exhaustive, as Neil Gaiman's involvement in various projects is extensive. You can find more information about his work on his official website and IMDb page.