Fresh off the second season of Silicon Valley, editor Tim Roche now finds himself editing comedy year-round, splitting his time between Silicon Valley and It's Always Sunny in Philadelphia. Though there are two editors on Silicon Valley, there is no first or second chair—instead, Roche edits odd-numbered episodes, while editor Brian Merken handles the evens. "It's an experience just to sit there and have someone tell you jokes all the time," he says of the appeal of…