Guy Ritchie -- features director (Snatch, Swept Away) and Madonna's mister -- has signed with Anonymous Content for exclusive U.S. commercials representation. Ritchie worked with Anonymous two years ago on Fallon's BMW Films project, to which he contributed the short film Star. ... Director Christian Charles, the former Ogilvy & Mather creative who helped develop American Express ads featuring Jerry Seinfeld and went on to direct the Seinfeld documentary Comedian, has signed with Celsius Films for commercials representation. ... Gethin Stout, formerly of Lowe/London, has joined Publicis/Seattle as a senior VP-group creative director. He will team with GCD Rob Rich on the Washington Lottery and Coinstar accounts. ... Amy Hill and Chris Riess, better known as the directing team Riess/Hill, have signed with Santa Monica production company Gartner. The duo was formerly repped by Anonymous Content. ... Andy Liberman, formerly of SSSI, has joined Baltimore's Eisner Interactive as a web designer.