Remote patrol weekend

The best TV in America this weekend may well be British - and no, we're not talking about that "Millionaire" import. "Masterpiece Theatre" unveils a new adaptation of the Dickens classic "Great Expectations." Bob Hoskins, Maggie Smith and Ian McKellen are just some of the talent stocking this two-night presentation, which begins at 9 p.m. Sunday and concludes at 8 p.m. Monday on Channel 19. Like PBS, the Discovery channel often co-produces its shows with public-TV networks in other countries. The latest collaboration is "Walking with Dinosaurs," a you-are-there re-creation of the reign of Earth's most towering creatures. The 3-hour special, co-produced with the BBC, airs at 6 p.m. Sunday (and repeats at 9 p.m.) on Discovery. Computer animation and contemporary wildlife footage were painstakingly fused to make "Walking With Dinosaurs"; you can see how they did it in a one-hour behind-the-scenes special 8 p.m. Monday on Discovery. @ART CAPTION:Take to the air and ground with the Discovery Channel's "Walking with Dinosaurs." @ART:Photo @ART CREDIT:Discovery >>>