CNN's Designated Sitter: Bob Costas To Be Larry King's Regular Guest Host

"Bob's broad range of interests, his quick wit and his deft interview skills will engage viewers in the best King tradition," Klein said yesterday in a memo to his staff about the Costas hiring.

Another in our ongoing reports on Where in the World Is Dave Chappelle:

Dave Chappelle has been sighted meeting with a Comedy Central suit in Los Angeles.

It's the comic's first meeting with the network that's reportedly paying him upward of 50 million bucks for a third and fourth season of "Chappelle's Show" since he performed his Amazing Disappearing Act with exactly zero episodes completed. Turns out, Chappelle hopped on a plane to South Africa, forcing Comedy Central to scrub the highly promoted May 31 season debut.

Network spokesman Tony Fox confirmed an Associated Press report that that nice network president, Doug Herzog, met with Chappelle on Friday. He declined to reveal the exact location or what the two talked about, but we're guessing that $50 million and Seasons 3 and 4 were mentioned.

Two days earlier, Chappelle stunned customers of two Hollywood comedy clubs when he showed up unannounced, saying he'd just landed in L.A. and wanted to perform.

That's nearly two weeks after he'd raised eyebrows at Ye Old Trail Tavern in Yellow Springs, Ohio. Patrons told the Dayton Daily News that Chappelle had been spotted in town "just chilling and walking around with his friend."

That was about a week after a Chappelle sighting at uShaka Marine World ("The marine park is tastefully themed with African imagery and exudes an air of fun and excitement") on the beach of the South African port of Durban.

There, he told Time magazine's Johannesburg bureau chief that he had not checked himself into a mental health facility, as Entertainment Weekly had reported, but had dropped everything and traveled to South Africa to visit a friend, "take inventory" and whine to Time about how hard life is for him, what with making $50 million and finding that your "inner circle" has changed. Really sad stuff.

Not long after Chappelle was sighted at that theme park in South Africa, Herzog was quoted as saying that Comedy Central was no longer planning for a third season of "Chappelle's Show" in 2005. No word as of yesterday whether his chat with Chappelle last week did anything to change his mind.

And last week, while Chappelle was chatting with Herzog in Los Angeles, Comedy Central sold 400,000 more copies of the "Chappelle's Show" second-season DVD, for a total of 1.4 million copies to date. The first-season DVD has so far sold 2.9 million copies, making it the biggest-selling DVD of a TV series ever.