Justin Timberlake and his ex-girlfriend Cameron Diaz will present the animated film "Shrek the Third" in Berlin on Friday. The pop singer lent his voice to the young King Artie in the film; Diaz reprises her role as Princess Fiona. Also in attendance in Berlin are the lead actors Mike Myers (who voices the green ogre Shrek) and Antonio Banderas (the voice of Puss in Boots). On Thursday, Diaz and Banderas analyzed the message of the friendly green monster's third film adventure in Paris. The film opens in theaters on June 21.