It was Justin Theroux's moment in the spotlight when he stopped by to tape an interview for Jimmy Kimmel Live in LA today. Jennifer Aniston came along for the afternoon chat, which we'll be able to catch on this Thursday's show. Jennifer and Justin are out promoting their movie Wanderlust before it hits theaters on Friday. Jennifer and Justin kept their distance at the Wanderlust premiere last week, though things are clearly still going strong with the couple. We chatted with Jennifer about her first impression of the leather-jacket loving actor-writer, and she joked to us that she did consider whether Justin could be a "serial killer" before realizing that he's such a nice guy.