After more than 30 years on the charts, comedian-singer "Weird Al" Yankovic earns his first No. 1 album on the Billboard 200, as "Mandatory Fun" debuts atop the list. The album is the first comedy set to top the chart since 1963, and logs the largest sales week for a comedy album since 1994. "Mandatory Fun" was released July 15 through Way Moby and RCA Records, and sold 104,000 copies in the week ending July 20, according to Nielsen SoundScan. It was promoted by a well-receiveddaily viral video campaign that launched Monday, July 14. Starting with his parody of Pharrell's...