Zac Efron's come a long way from his days as all-singing, all-dancing High School Musical heartthrob. With the ex-Disney star once again flexing his grown-up comedy muscles in soon-to-be released Neighbors 2: Sorority Rising, and set to spend a lot of time with his shirt off for Baywatch next year, let's take a look at five times Zac looked great with clothes on.