Gemma Arterton says Jake is quite goofy

"Prince Of Persia star Jake Gyllenhaal is quite a 'goofy' person, according to his co-star Gemma Arterton.Arterton, 24, plays the role of Tamina opposite Gyllenhaal in the new movie, which is out later this year.
Gemma Arterton and Jake Gyllenhaal as Tamina & Prince Dastan in Behind the Scenes Featurette: "Prince of Persia The Sands of Time" (2010).

Asked about working with Gyllenhaal, she said: 'He's absolutely gorgeous and lovely, and quite goofy once you get to know him.
'The film was originally a video game so there was a lot of pressure on him from the fans, but he really went for it - he worked out every day, on top of filming. I've got no idea how he managed it.' Source: www.monstersandcritics.com