If it's not the best teen movie of all time, then it's certainly in the top 10. And as of June 2011, "Ferris Bueller's Day Off" is 25 years old. Hard to believe that the world's best day of hooky could have been that long ago, right? In honor of the occasion, Wonderwall is looking at what the cast is up to today. Click through to see the stars then and now!