Mark Wahlberg and director David O. Russell have made three films together: Three Kings, I Heart Huckabees, and now The Fighter. Though some actors (George Clooney and Lily Tomlin among them) have famously battled Russell on set over the years, he and Wahlberg seem to be the perfect match for each other. In Part 1 of our three-part EW video interview, we talk about why they work well together and how Russell inadvertently helped Wahlberg come up with the concept for Entourage. Watch it below:

Check back tomorrow for Part 2.