Seems like just yesterday we were watching the hilarious actor in "Can't Hardly Wait" as the wannabe gangster Kenny Fisher.
Since starring in the popular teen flick, Seth's gone on to lend his famous face and voice to a slew of TV shows.
From his recent gig on FOX's new series "Dads" alongside Giovanni Ribisi and Vanessa Lachey to voicing Chris Griffin on the beloved cartoon "Family Guy," Seth's definitely done well for himself over the years!
Green has been just as successful in his personal life, too -- in 2010 he tied the knot with fellow actress Clare Grant.
We can't wait to see what Seth does next! How do you think he's aged? Tell toofab in the comment section below and click "Launch Gallery" above to see the entire cast of "Can't Hardly Wait," then and now!