Martin Bashir is leaving his post at ABC's "Nightline" to anchor a daily afternoon show at MSNBC. He will also contribute to contributor to "Dateline NBC." Bashir joined ABC's newsmagazine "20/20" in
2004, gaining attention for his documentary "Living With Michael Jackson," which aired on ABC in 2003. Bill Weir, who co-anchors the weekend edition of "Good Morning America," will join "Nightline."