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1/13/2026 // SUBJECT: It's Such a Beautiful Day (2012) Cast and Context Processing: 1m 13.3s
Source: Gemini 3.0 Flash + Search
Analysis: gemini-3-pro-preview
Timeline: Skipped
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Counts based on original analysis categories (not yet classified).

Errors = Critical Errors + Imprecisions

Missing = Critical Omissions + Notable Gaps

#Q ORIGINAL QUESTION

Regarding the film It's Such a Beautiful Day (2012), who was the most famous actor in it at the time of release, and what other notable films were they in?

#M ANNOTATED LLM RESPONSE

The film "It’s Such a Beautiful Day" (2012), directed by independent animator Don Hertzfeldt, is notable for its lack of traditional Hollywood casting. The "most famous" actor in the film at the time of its release—and indeed the primary person heard throughout the film—is Don Hertzfeldt himself.

Because the film is an experimental, self-produced animation, Hertzfeldt performed nearly every major role, including writing, directing, animating, and providing the deadpan, omniscient narration that defines the movie's tone.

1. Don Hertzfeldt (Narrator / Voice of Bill)

Hertzfeldt was already a "famous" figure in the world of independent film and animation by 2012, having achieved a cult following and critical acclaim.

2. Supporting Cast

The only other credited voice in the 2012 feature is Sara Cushman, who voices the character of the Doctor. While a frequent collaborator of Hertzfeldt's (appearing also in his later World of Tomorrow series and The Meaning of Life), she was not a mainstream "famous actor" at the time of release.

3. Common Misconception: Philip Seymour Hoffman

It is worth noting that It's Such a Beautiful Day is frequently confused with another highly acclaimed, dark, independent animated film from the same era: "Mary and Max" (2009).

Summary Details

#F CORRECTION FEED (CLICK TO SEARCH)

[1] Don Hertzfeldt is the primary voice and creator of the film. There are no mainstream Hollywood actors in the cast.
[2] Hertzfeldt is credited with writing, directing, producing, animating, photographing, and narrating the film.
[3] Rejected (2000) was nominated for an Oscar and is famous for the quote 'My spoon is too big'.
[4] The Meaning of Life (2005) is a notable short film by Hertzfeldt.
[5] World of Tomorrow (2015) was released after It's Such a Beautiful Day (2012) but is a major part of his filmography. The summary correctly notes the timing.
[6] Sara Cushman is the only other voice actor listed in the credits.
[7] Mary and Max (2009) and It's Such a Beautiful Day (2012) are frequently compared or recommended together due to similar themes (mental illness, indie animation).
[8] Philip Seymour Hoffman voiced Max in Mary and Max (2009).
[9] The film combines three shorts produced between 2006 and 2011 using a Richardson animation stand.

#O MISSED POINTS & OVERSIGHTS

No oversights detected.

#C RELATED QUERIES

#01 What are the three short films that make up It's Such a Beautiful Day?
#02 Did Don Hertzfeldt win an Oscar for World of Tomorrow?
#03 Who is Sara Cushman in relation to Don Hertzfeldt's work?

#S SOURCES

movieweb.com filminquiry.com wikipedia.org

#R ORIGINAL AI RESPONSE

#A DIRECT ANSWER (VERIFIED ANALYSIS)