I don't much like them myself, but Undercover asks the question, are Coldplay the last of the superstar acts? They argue that the 21st century has not produced any act of the constantly Top 10 album producing acts of the 90s and earlier.

The 90s had Nirvana, Smashing Pumpkins, Soundgarden, Foo Fighters, Oasis, Blur, Stone Temple Pilots, Pearl Jam, Matchbox Twenty, Radiohead, Alanis Morrissette, Backstreet Boys.

Not one act of the 21st Century can fit alongside any of those names.

[...]

We are just 18 months away from the end of this decade. What a pathetic music period it has been. Maybe the Y2K bug was real. Maybe it only turned off the music industry.

I can't think of anyone. I was going to say Gorillaz, but they're 1998.

Fall Out Boy and My Chemical Romance formed in 2001 and they're doing pretty well. But they're not superstars. And hardly anyone of note (that I've heard of) since... at least not listed at Wikipedias "[Year] in music" articles.

(To be completely fair... Nirvana started in the 80s. As did the Smashing Pumpkins and Stone Temple Pilots, and thus to argue Justin Timberlake doesn't count because of 'NSync isn't really fair.)