I don't know how "big" simple plan is in the states or overseas but here in Canada they're all over pop radio and let me tell you they've put out some of the shittiest music known to humanity.
I firmly believe that they are one and the same band as Good Charlotte, and I challenge any of you to prove me wrong. At the very least, they are the exact same level of shittiness.
Noclaw, on the Pop Group song, I have to say, I actually enjoyed it, and didn't really find it that terrible to listen to at all.
And I think Kai may have won for finding the shittiest band ever with Hawthorn Heights. The video just drives the point home. I have to say. I love the shots of the band, with the band members who aren't the lead singer going "nuts" on their guitars in the background. Also, the comments about how they're post-hardcore are great fun.