_Titanica_ is a fairly well-made Titanic documentary that explores some thoughtful and intriguing issues. The film documents a 1992 expedition to the underwater wreckage of the RMS _Titanic_, and provides some cursorily information about the ship, its fated voyage, and the controversy over salvaging the remains. Filmed in Imax, it goes into some fascinating detail in the mapping and photographing of the wreckage. And, actor Leonard Nimoy provides a powerful and commanding narration. An engaging and visionary film, _Titanica_ delivers a rare look at one of the most compelling disasters and discoveries in the 20th century.