She's not just fast. She's very fast.

Rankings for the top 15 programs on cable networks as compiled by Nielsen Media Research for the week of April 28-May 4. Day and start time (EDT) are in parentheses:

Dan Rather has filed an amended lawsuit against CBS that says other TV networks refused to hire him because of the damage executives at his former company did to his reputation after a disputed 2004 report on President Bush.

Cablevision Systems Corp. is buying the Sundance Channel, a cable network founded by Robert Redford, for $496 million, the New York-area cable TV company announced Wednesday.

Prime-time viewership numbers compiled by Nielsen Media Research for April 28-May 4. Listings include the week's ranking, with viewership for the week and season-to-date rankings in parentheses. An "X" in parentheses denotes a one-time-only presentation.

The May "sweeps" is precisely the wrong time to hit low marks in the ratings. But several big shows did last week.

Sure, things look rough for Yahoo Inc. and Microsoft Corp. after they couldn't agree on a deal. Yahoo's stock has cratered, and its would-be suitor has to figure out another way to catch up in the online ad market, a flaw so big Microsoft was willing to pay $47.5 billion to fix it.

More than a thousand prominent African-American leaders, executives, entertainers and activists will head to Tanzania for a summit with their African counterparts to help raise living standards on the world's poorest continent.

Shimmering stadiums and billions of dollars spent to remake Beijing into a modern city have been overshadowed by pro-Tibet protests, chaos on the Olympic torch relay, and an anti-Western backlash by angry Chinese who sense their coming-out party is being spoiled.

Media conglomerate Cox Enterprises Inc., betting its future on Internet advertising as newspaper and television audiences shrink, plans to spend $300 million to buy a startup that helps Web sites pool their ad space.