I've only been on this board for a short time, and I love it because you can discover all sorts of bands that you hadn't heard of before. But I feel like I don't have a good idea what the more mainstream preferences of the board members are, if anything. This isn't the same thing as guilty pleasures (although it could be I guess); it can be artists that you genuinely have respect for.
I would prefer mainstream or popular to be defined by bands that have gotten broadcast radio airplay, I guess, format of the radio station doesn't matter. But not prog
By like, I mean like a large part of their catalog, however you want to define a large part. You don't have to own all their CDs or have ever gone to a concert of theirs.
It would also be interesting to divide it into bands that have been around for a while and pretty much everyone knows them, and more recent bands, who might have gotten a song or two on the radio, but you've found that they have a lot of good songs that don't get airplay too. I don't want to be strict about it, so be lenient with your definitions. Anything in the last 10 years can probably be considered recent.
So, using some answers that I would give, a format might be:
Old:Foo Fighters (I realize they're not old in the large picture, but they've been at it for quite a while)
R.E.M.
Recent:Sara Bareilles
Katy Perry (serious guilty pleasure; deal with it
)
Eminem (not his early stuff though, which is why I put it in the recent category)
Snow Patrol
I think a lot of us use our music tastes to help us tell ourselves how we're different from most people. But there's got to be music that we like, even though lots of other people like it too and we know it.