Oddly enough, I think that men's hats may be making a resurgence among the younger generations. Granted I don't have solid data to back this up, besides a lot of people who I have seen on campus (myself included) regularly wearing hats. Many of these are black fedoras, so Notch may be slightly responsible.
I have seen a similar phenomena. I assure you that none of these people have seen a picture of Notch.
The fedora/trilby/etc could be better said to have simply never gone completely out of style. It's popularity just seems to ebb and flow like the tide.