He has a nice enough body, but I've yet to hear anything I liked in all the snippets of Maroon 5 songs I've heard on television or out in public, and I find his voice pretty grating.
I don't know anything about him as a person, though.
American and to some degree, british pop music is awful. At least the mainstream music. There are so many amazing pop musicians, that get overshadowed by rubbish like Rihanna and J.Lo. Sad situation.