I honestly stopped listening to "pop" music (Top 40-type stuff) when I discovered punk in the early '80s, so it's hard for me to comment on what's currently popular. At least in the early '80s we had a lot of new wave stuff that was in the charts, so it wasn't completely bad. The '70s had its moments, too. But these days, it's hard for me to comment (but I will!)... I hear a lot of shit when I'm out amongst the zombies in the general public, in retail stores and public places (like getting my hair cut at Great Clips, for example), that is really awful, and I can only assume it's modern-day pop music. It always amazes me just how bad it is and I'm floored that I often see people actually singing along to it. This is why I can't stomach shows like American Idol—it's exactly the same way. Take modern country music, for example. It's downright terrible. I mean really, really bad pop music that just so happens to be about a guy and his truck or some stupid shit. Aside from the goofy lyrics and singer's down-home good ol' boy (or gal) accent, it sounds just like the rest of the pop music shit. And don't get me started on "modern rock," modern R&B or hip hop. Try comparing modern R&B to the stuff of the '60s & '70s... completely different animals. All that stuff appears to be very popular and in the mainstream, so while Mike makes a good point that some music being produced today isn't terrible, you just don't hear it as often as you hear the completely awful shit.
I stumbled across this tune (below) on Blip.fm not too long ago. I don't know if it was popular in the UK a couple of years ago or not, but it's a great song and definitely should've been if it wasn't...
New (well, 2009 new):