• If NBC decides not to renew "The Apprentice," producer Mark Burnett is saying, he'll shop the show to other networks, because, apparently, everyone is looking for the chance to work with Donald Trump on a low-rated series.

NBC's Reilly told reporters that he's still interested, but you have to know they are haggling over how much NBC will reduce its payout for the show.

Meanwhile, Trump continues to be Trump and bluster. After spending the season calling the sagging "Apprentice" the No. 1 show on TV -- it averaged about 7.5 million viewers and didn't make the top 50 -- he told the New York Daily News this week that it's "one of the most successful shows ever on television." Wouldn't that make you nervous buying real estate from this guy?

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A heads-up for fans of "The Simpsons," one of the best shows ever on television, right up there with anything from Donald Trump.

Seriously, "The Simpsons" is a first-ballot hall of fame show, and for so long it was the gold standard for ironic social commentary and for laughs. It's in its 18th season, and -- speaking as a loyal devotee -- though its humor is now sometimes painfully clunky and obvious, it's still worth noting that the show will hit episode No. 400 on Sunday.

That will be the second episode of the evening (at 8 and 8:30 on Channel 40), and it does have a couple golden moments amid the clunky.

There is even better news, which is that the buzz on "The Simpsons Movie" coming this summer is that the feature film will be back to the form of the good old days.

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Speaking of hall of famers, CBS tonight (at 7 on Channel 13) airs "That's the Way It Is: Celebrating Cronkite at 90," a look back at the career and life of the masterful Walter Cronkite.

The hour special talks with all the usual news folk, but also includes some good friends, including Robin Williams, George Clooney and Grateful Dead drummer Mickey Hart. Turns out, Cronkite is a late-in-life Deadhead.

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There is still time to get on the "Heroes" bandwagon before the season finale Monday night. Starting at 9 a.m. Saturday, Sci Fi Channel will run all 21 episodes of the show in a single, mind-expanding marathon.

No one is saying it, but rumblings from some mysterious geneticists imply that anyone who watches all 21 hours straight could develop a super power of their own. Or a phenomenal headache.

ON TV

That's the Way it is: Celebrating Cronkite at 90

7 p.m. Friday on 13

Heros 21-hour marathon

9 a.m. Saturday on SciFi

The Simpsons