I AM EYE, a collective of local independent filmmakers, is sponsoring a screening of Fritz Lang's The Thousand Eyes of Dr. Mabuse Monday at 8:30 at D.C. Space, 443 Seventh Street NW. Admission is either $2 or a film of your own making, which I Am Eye promises to show both that evening and at special screenings later on. For further information, call 393-0255.

For the first quarter of 1985, the Mary Pickford Theater at the Library of Congress will be presenting a series called "The Realm of Folly: Satire and Caricature in the British Postwar Film." The 26 shorts and features in the program cover the period from 1947 (Alberto Cavalcanti's version of Nicholas Nickleby, featuring Cedric Hardwicke's vivid portrayal of Uncle Ralph) to 1975 (Stanley Kubrick's sweeping Barry Lyndon). Along the way, there are some highlights and rarities, including a number of vintage Alec Guinness comedies, Alexander Mackendrick's charming Whisky Galore (aka Tight Little Island), and the uncut version of Lindsay Anderson's masterpiece, O Lucky Man!

Presented in conjunction with a current Library of Congress exhibition called "The Realm of Folly: English Caricature, 1620 to the Present," the series opens with an early Peter Sellers vehicle, Only Two Can Play, which screens Wednesday at 7:30. All the films are free, but since seating is limited to 64, you need to make reservations by calling 287-5677 from 9 to 4:30 during the week. Reservations are held until 10 minutes before showtime; standbys are admitted at that time. That phone number will also get you a copy of the complete schedule, which runs through March 29. (The caricature exhibit closes February 17.) The Pickford Theater and the exhibit are in the James Madison Building, 101 Independence Avenue SE.

The American Film Institute Theater is presenting the Washington premiere of The Night The Prowler Thursday at 6:30 and Sunday, January 13, at 8:30. The film -- made in Australia in 1978 by Jim Sharman (whose 1975 cult classic The Rocky Horror Picture Show is in its seventh year of weekend midnight screenings at Georgetown's Key Theater) -- is an offbeat tale of a supposed rape and its after-effects on a young woman from an upper- crust family. For further information, call the AFI box office at 785-4601 from noon to 9 every day.

According to the lead story in the latest issue of Variety, the average cost of a Hollywood movie will drop in 1985, from about $11 million to $10.6 million. While this drop was expected in these austere times, there are still a number of big-budget films already in production for 1985 release. Of the 28 pictures either in production or planned for 1985 with budgets of $14 million or more, six films are budgeted above $25 million: Enemy Mine (Twentieth Century-Fox, $26 million); Rambo: First Blood II (Carolco/Tri-Star, $28 million); Pirates (Carthago/De Laurentiis/MGM/UA, $29 million); A View to a Kill (MGM/UA, $30 million); Legend (Milchan/Universal/Twentieth Century-Fox, $30 million); and far and away the most expensive movie of 1985, Santa Claus: The Movie (Salkinds/Tri-Star, $50 million).

The new frugality is based on a concentrated effort by the major studios to hold down risks in feature-film production, the wisdom being that it is safer to release five films at $10 million each than one film at $50 million.

THE PAGES OF FILM HISTORY: Birthday greetings on this day to Sterling Holloway, Jane Wyman, Sorrell Booke (Boss Hogg on "The Dukes of Hazzard"), Don Shula and Samille Diane Friesen, otherwise known as Dyan Cannon. And it was 14 years ago this date that Performance, the directorial debut of Donald Cammell (The Demon Seed) and Nicolas Roeg (The Man Who Fell to Earth) was finally released by Warner Bros. -- two years after it was made; it was technically the film debut of Mick Jagger, but Tony Richardson's Ned Kelly had been released in the interim). Saturday's birthdays include those of French actor Jean- Pierre Aumont, Walter Mondale, Chuck Noll, Robert Duvall, Diane Keaton and Pamela Sue Martin. Not only is Sunday the 95th anniversary of Tom Mix's birth, but it also marks the birthdays of Sherlock Holmes, Vic Tayback, E.L. Doctorow, Bonnie Franklin, Loretta Young and Amos Joseph Alphonsus Jacobs, better known as Danny Thomas.