Iron Man star Gwyneth Paltrow has been candid about her postpartum depression following the birth of her son, Moses, and in an interview with E! Online, the actress acknowledges how difficult it was. "I had a really tough time, it was a very weird, kind of an out-of-body experience," she admits. "Luckily, I was able to come out of it." Gwyneth also revealed that her children call hip-hop impresario Jay-Z "Uncle J," and that Madonna "stole my trainer, so I have to video chat with her." The two friends apparently work out together via video! The mother of two, who's raising her children in London and NYC, also found time to do a "cooking and cultural tour of Spain" with star chef Mario Batali for PBS. And one last surprising revelation? Gwyneth speaks some pretty impressive Spanish!