Given that he's been the co-writer and director for now four of Will Ferrell's funniest movies, and worked with the comedian since his earliest days at Saturday Night Live, Adam McKay probably knows what tickles Ferrell better than just about anyone. The duo produced Anchorman, Talladega Nights, Step Brothers, a gaggle of Funny or Die shorts, and now The Other Guys, and their partnership only seems to get richer with age. In their latest collaboration, Ferrell plays a desk-bound police auditor, and McKay turned the character into a caged lion trying to keep his darkest – and most hilarious – impulses in check.

Cinematical sat down with McKay at this year's San Diego Comic-Con, where he, Ferrell and the rest of the cast were promoting The Other Guys. In addition to talking about the evolution of their longtime partnership, McKay revealed his and Ferrell's approach to creating characters and comedy in general, offered a few thought about potential follow-ups for their most famous films, and reflected on the past, present and future of their careers.