1. First and foremost, here's Freddie Prinze Jr. pre-gray:

Never forget his short-lived spiky frosted tips era.

And here he is now in his silver fox era:
2. JC Chasez as you probably remember him in his chin-strap era:

Just a bunch of silly boys who can't figure out how to use a wagon!

And here he is now in his silver fox era:

He was actually at the VMAs this year, and I'm sad to report he dyed his luscious locks!

3. Here's Steve Carell in the early 2000s:

Truly his brunette era.

And here he is now in his silver fox era:

4. Let's talk about Patrick Dempsey:

Ohh lala McDreamy!

And here he is now in his silver fox era:

5. Now for Seth Green:

What a bad boy!

And here he is in his silver (beard) era:

6. Oscar Isaac will always be attractive:

Oh so serious!

And here he is now in his silver fox era:

7. Here we have Josh Hartnett:

Silly boy doesn't know how to use a chair!

And here he is now entering his silver fox era:

8. Let's look into Matt LeBlanc:

What a cool dude!

And here he is in his silver fox era:

9. We have Chris Pine:

Here's what he looked like pre-gray:

And here he is now in his silver fox era:

10. Next up is Mark Hoppus:

Here's how you probably remember him:

And here he is now in his silver fox era:

11. Let's zoom in on Seth Rogen:

So dramatic!

And here he is now in his silver fox era:

12. Let's talk about Johnny Knoxville:

Here's how you probably remember him:

And here he is now in his silver fox era:

13. If we're talking about Johnny Knoxville, then we obviously have to talk about Steve-O:

Here he was then:

And here he is now in his silver fox era:

14. Joey Fatone is up next:

I personally love his Ronald McDonald era.

And here he is in his silver fox era:
15. Next up we have 2/4 of the members of 98 Degrees:

Justin and Drew are both gray now:

16. Let's talk about Jesse Bradford:

This was him then:

And here he is in his silver (beard) era:
17. We got Rider Strong:

Here's how you probably remember him:

And here he is now in his silver fox era:
18. Now for Joey Lawrence:

Here he is then:

And here he is now in his silver fox era:
19. Remember his little Lawrence brother, Andrew Lawrence?

He's gray, too:

20. Let's talk about Devon Sawa:

Here he is with his cute lil' haircut and earring:

And here he is now in his silver fox era:
21. Brandon Boyd is from the band Incubus:

Remember "Drive"?
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And here he is in his silver fox era:
22. Next up is DJ from Roseanne aka Michael Fishman:

Here's how you probably remember him:

And here he is now in his silver fox era:
23. And lastly, we've got Ben Stiller:

This was him then:

And here he is in his silver fox era:
