The budget for its production was just $600,000, making it not only the fifth highest-grossing film of 1970 but one of the most profitable movies of that year as well. Decades after its initial release, the film earned a rare 100% "Fresh" rating on the review aggregate website Rotten Tomatoes based on 25 reviews, with a weighted average of 8.58/10. The critical consensus reads: "By documenting arguably the most renowned music festival in history, Woodstock: 3 Days of Peace & Music achieves the rare feat of capturing the unique spirit of its time." In his original 1970 review, Roger Ebert rated the movie 4 stars (out of 4) and described it as "maybe the best documentary ever made in America", adding "The remarkable thing about Wadleigh's film is that it succeeds so completely in making us feel how it must have been to be there". In 2005 Ebert added Woodstock to his "Great Movies" list and wrote a retrospective review that stated, "Woodstock is a beautiful, moving, ultimately great film...Now that the period is described as a far-ago time like "the 1920s" or "the 1930s," how touching it is in this film to see the full flower of its moment, of its youth and hope." In 1996, Woodstock was selected for preservation in the United States National Film Registry by the Library of Congress as being "culturally, historically, or aesthetically significant". In the science fiction thriller The Omega Man (1971), Colonel Robert Neville (played by Charlton Heston) is seen traveling to a movie theatre in Los Angeles to screen the film for himself alone. Woodstock had been a recent film debuting prior to release of The Omega Man, and had been held over (continuously run) in some theaters for months. Neville darkly remarks the film is so popular it was "held over for the third straight year". As he repeats some of the dialogue verbatim, it is clear that Neville has repeated the ritual many times during the two years that he has believed himself to be the last man alive on Earth. In a 2009 review, Noel Murray of The A.V. Club graded the DVD release A−, stating, "Wadleigh crafted a film with a thoughtful flow; it tells the full story of the event, from the paranoia (and eventual acceptance) of the locals to the helpful attitudes (and eventual paranoia) of the throng. Woodstock runs for more than 20