Let's Do the Time Warp, Again: "Rocky Horror" Becomes a National Treasure

"The Rocky Horror Picture" show is one of the 25 films added to the Library of Congress' National Film Registry.

Others making this years list include:

• Hoop Dreams
• Fast Times at Ridgemont High
• The French Connection

This years list brings to 425 the number of films preserved at the Library of Congress and other instutions involved in saving great works on film.

It's estimated that half of all films made before 1950 have been lost forever. (CNN)