the whole "internet fragmentation of modern culture" thing

It's funny that even though I didn't start really listening to hip-hop until I was in high school, the sound of early 90s gangsta rap really gives me a sense of nostalgia for my childhood. I guess The Chronic (and that sound in general) was so pervasive in pop culture when I was 5 that--even though I was only vaguely familiar with Dr. Dre, Snoop Dogg, and Ice Cube's names at the time, not even their music--that whole sound reminds me of elementary school. Just like Nirvana and Soundgarden and Mortal Kombat and old episodes of The State and Beavis and Butthead. I didn't really directly experience most of these things at the time, apart from one babysitter who was really into Nirvana and would occasionally watch MTV when he was over, so I find it funny how much I unconsciously absorbed early 90s pop culture. I can't play Grand Theft Auto: San Andreas without feeling like a kid again, despite having never been to L.A. and (obviously) never having been in a gang.

So here's the question: are there any trends in pop culture as dominant these days as that whole "Alternative Revolution" and hardcore hip-hop were from 91 to 95 or so? Will the kids growing up today be able to feel nostalgic about things they only indirectly experienced, or is there no pop culture as monolithic as things tended to be before the internet blew our culture into tiny little fragments? That's not necessarily a bad thing, I guess. I like not having to deal with music I don't like on a regular basis--I've heard that Soulja Boy bullshit (apparently a massive hit?) a few times but hardly enough to remember what it sounds like--but the whole thing is weird to me. It's strange growing up in a world where the idea of the Rock Star is taken for granted, only to find that it no longer really exists by the time you're an adult.