YOU CAN CLAIM THE BEST SEATS IN the house as some big-ticket pop acts hit the stage via the small screen this week. Getting things off to a sultry start is that smooth operator Sade, filmed in concert in San Diego last month (PBS, Wed., Nov. 24, 8 p.m. ET). On Thanksgiving night (Nov. 25, 10 p.m. ET) NBC unleashes the vava-voice of Mariah Carey in a special that presents the sexy siren at home (having a giggly food fight with a couple of girlfriends) and making her concert debut last summer in Schenectady, N.Y. On Saturday (Nov. 27, 9 p.m. ET) those sons of the Old Sod, U2, beam in from Sydney with a pay-per-view concert. Because of the time difference, the show will be live on tape (one of my favorite TV oxymorons). Finally, on Sunday (Nov. 28, 9 p.m. ET) the Disney Channel presents David Bowie: Black Tie White Noise, an imaginative if underpunctuated interview and performance pastiche drawn from the provocative rocker’s latest album.