MTV, which oughtta know, has come up with a list of the "100 Greatest Videos Ever Made" and will start airing a weeklong countdown tomorrow. The videos were chosen from more than 19,000 clips that MTV has aired since the channel was launched in 1981. According to MTV, the greatest video ever is Michael Jackson's "Thriller." After that, there's a clip for nearly every kind of pop music fan on the list, including Nirvana ("Smells Like Teen Spirit"), Bjork ("It's Oh So Quiet"), Dr. Dre ("Nothin' but a 'G' Thang") and Fatboy Slim ("Praise You"), as well as Madonna, natch. The list features clips from R.E.M., Missy Elliott, Nine Inch Nails, Marilyn Manson, Korn, the Chemical Brothers, Beastie Boys, Public Enemy, Radiohead, Fiona Apple, Tom Petty, the Replacements and George Michael. And, yes, Duran Duran is on the list (both "Hungry Like the Wolf" and "Girls on Film") . . .

Has Tina Turner decided at the age of 60 that she's ready to give it a rest? "There comes a point where it is just undignified to be a rock-and-roll star," she says. But Turner is not so undignified: She has just recorded a new album and is ready to embark on what she says may well be her farewell tour . . .

Oasis singer Liam Gallagher went AWOL last weekend. A rep for the British rock band confirms that the star's wife and his brother, Noel Gallagher, were searching frantically for him over the weekend. The band's spokesman declined to say where Gallagher went off to or why. Oasis's new album, "Standing on the Shoulder of Giants," hits stores in February.