The U.S. sitcom \"How I Met Your Mother\" was renewed for a ninth season after star Jason Segel agreed to return, Deadline.com reported. The show\'s future was unclear because Segel reportedly wanted to leave to focus on his successful film career; however, he signed on Friday for an additional season. \"I\'m happy the world(s) didn\'t end,\" Alyson Hannigan, who plays Segel\'s on-screen wife on the sitcom, tweeted, posting a link to Deadline.com\'s story about the renewal and referring to the much-exaggerated, ancient Mayan prediction about the Dec. 21, 2012 end of the world.