Which fantasy epic film features the Battle of Helm's Deep, where the Rohirrim and elves defend against Saruman's Uruk-hai, and Frodo and Sam continue their journey to Mordor with Gollum?

The epic fantasy film that brings to life the monumental Battle of Helm's Deep, where the valiant Rohirrim and elves mount a desperate defense against Saruman's relentless Uruk-hai, while Frodo and Sam continue their perilous quest to Mordor with the cunning Gollum, is "The Lord of the Rings: The Two Towers (Review)." This cinematic masterpiece, the second installment in Peter Jackson's acclaimed trilogy, perfectly captures the sprawling narrative and intense conflicts of J.R.R. Tolkien's beloved novel.

The Battle of Helm's Deep stands as a pivotal moment in the film, showcasing a grand-scale siege that pushes the forces of good to their absolute limits. The meticulous construction of the Helm's Deep set alone took seven months, and the battle sequence itself was filmed over four months, largely at night, highlighting the immense dedication to bringing Tolkien's vision to the screen. This sequence is renowned for its innovative use of practical and computer-generated effects, which were groundbreaking for its time, creating a truly immersive and harrowing experience for viewers.

Meanwhile, the parallel storyline follows Frodo Baggins and Samwise Gamgee as they navigate the treacherous landscapes on their way to destroy the One Ring in the fires of Mount Doom. Their journey is complicated by the presence of Gollum, the former Ring-bearer, whose internal struggle and manipulative nature add a layer of psychological depth to their quest. Andy Serkis's performance as Gollum, achieved through pioneering motion-capture technology, was a technical marvel that redefined character animation in cinema.

"The Lord of the Rings: The Two Towers" was filmed concurrently with the other two films in the trilogy, a monumental undertaking that allowed for a consistent artistic vision across the entire saga. The film was not originally conceived as a standalone movie, but rather as part of a two-film adaptation, before New Line Cinema pushed for a full trilogy. Its critical and commercial success solidified the trilogy's place as a landmark achievement in cinematic history, earning numerous accolades and influencing countless fantasy films that followed.