Sunday, May 5 NBC'S 75TH ANNIVERSARY SPECIAL NBC (8 p.m. ET) Katie Couric and Bill Cosby are on hand as the Peacock Network preens for three hours.

Monday, May 6 100 GREATEST ONE-HIT WONDERS VH1(10p.m. ET) A five-part series recalls ditties like Right Said Fred's "I'm Too Sexy."

Tuesday, May 7 LAVERNE& SHIRLEY TOGETHER AGAIN ABC (8 p.m. ET) Penny Marshall, Cindy Williams and the gang share clips and memories.

Wednesday, May 8 SEARCH FOR THE FIRST HUMAN PBS (9 p.m. ET) A Secrets of the Dead special studies some 6-million-year-old bones.

Thursday, May 9 CSI CBS (9 p.m. ET) David Caruso guest stars in an episode leading to a Miami-set spinoff for fall.

Friday, May 10 INSTANT CLASSIC BLOOPERS ABC (9 p.m. ET) Dick Clark trots out goofs from Malcolm in the Middle, Becker and Reba.

Saturday, May 11 BEHIND CLOSED DOORS A&E (8 p.m. ET) Joan Lunden tours the Postal Service crime lab.