A lot of the day-to-day programming seen by Soviet viewers is suddenly bustin' out all over on American TV ...

The Discovery Channel is offering 66 hours all this week, and tonight Ted Koppel and ABC News' "Nightline" will devote a full hour to sampling the tubeski, Russian-style ...

Four of the six segments of "Eyes on the Prize" have aired on PBS, and it appears the acclaimed PBS series on the civil rights movement between 1954 and 1965 is attracting audiences only in the "mid-range" of PBS popularity ...

But PBS Video-which sells only to institutions, such as colleges and libraries-reports the series is already "the most powerful offering" the cassette sales service has had in its six-year history ...

Some 900 home videos of the six-hour series have already been sold, and PBS reports a "continued steady demand every day" ... despite a $295 sales tag for the tapes...

National ratings won't be available for some time, but the five-market average for the first four programs is a 2.5 Nielsen rating and a 4 percent audience share...

Each rating point represents 1 percent of the total TV homes in the five big cities-New York, Chicago, Los Angeles, San Francisco and Philadelphia ...

To compare those five-city averages with other informational series on PBS recently, four National Geographic Specials last year averaged a 6.6/10; 13 episodes of "Vietnam: A Television History" in 1983 averaged a 4.5/7; "War: A Commentary by Gwynne Dyer" did a 3.4/5; last year's editions of "Frontline" produced a 3.0/5; and "Comrades" did a 2.3/4...

Among the most-popular PBS entertainment series, the 14 episodes of "A Jewel in the Crown" in 1984-85 registered a 5.7/9, and 11 episodes of "Brideshead Revisited" in 1982 a 5.1/7 ...

By the week, "Eyes on the Prize" has registered a 3.2/5, 2.6/4, 2.1/3 and 2.3/4 ...

In case you catch yourself drifting off once in a while this week between 8 and 11 p.m., TV Column fans, hang in there. NBC will announce its new fall schedule May 13 ...

Meanwhile, the network is working on "The Return of the $6 Million Man and the Bionic Woman," a movie that will reunite the original spare partners, Lee Majors and Lindsay Wagner. They'll battle a radical organization that intends to take over the United States by using Lee's bionic son (a chip off the old engine block, perhaps?) "as a trump card" ...