Jake Gyllenhaal -- Good Genes Or Good Docs?!

Jake Gyllenhaal's looks over the years are kick-ass! Here is a 20-year-old version of the blue-eyed actor showin' some sexy stubble at the "Donnie Darko" Hollywood Premiere back in 2001 (left). In addition to playing Homer Hickam in "October Sky", this was a breakout role for Mr. Gyllenhaal. And, more than 20 years later ... all eyes were recently on a scruffier and tougher Jake -- at the New York premiere of his…