The Good: Over 40 million records sold. Creed almost single-handedly kept grunge-rock alive in the mainstream at the turn of the millennium when rave was rising and hip-hop was taking over the world.
The Bad: The whole we're-not-a-religious-band thing was kind of irritating, especially after videos full of, y'know, religious imagery. But worst was probably lead singer Scott Stapp's various vices and addictions getting so bad that fans actually sued (link) the band because their shows in 2003 were so bad. (Non-fans, of course, simply blamed the music.)
The Disparaging Words: "I want to dedicate this next song to the lead singer of Creed... That guy is an egomaniac. He's a f---ing punk, and he's backstage right now acting like f---ing Michael Jackson. F--- that motherf---er, and f--- you, too," said Limp Bizkit's Fred Durst, onstage at a music festival in 2000.