"Bust" is harsh for some of those. Dalton (and perhaps even Newton) will likely face a bit of a sophomore slump (it exists as a term for a reason,) but I don't know if they'll have flat out awful seasons.
Also, Angerer had surgery for a foot injury and will likely miss the first few weeks of the regular season.
If we're talking about guys who might be considered busts after this year, I have some names to throw out.
Sam Bradford - I think he'll be closer to a bust by the end of this year than anything resembling a quality NFL QB.
Mark Sanchez - Sticking with my "benched by week 6" prediction. I don't know how they'd justify keeping him around if that happens after this year, money be damned.
Jason Smith - Already been benched for the awful Barry Richardson. Would have been cut if not for taking a huge pay cut. Underrated in how bad of pick he was.
Kevin Kolb - Not exactly going out on a limb here...I bet he's cut after this season. Would be sooner if they had any other QB on the roster who could back up Skelton.
Shonne Green - Simply isn't a guy who can carry the full load in the NFL.
Blaine Gabbert - Anyone who has ever read any of my posts in the NFL section should know why.
Matt Cassel - Best case scenario, that team drags him to 10 wins again. Worst case (or perhaps it really is the best case,) he continues to be mediocre-average and the team decides to move on.
Carson Palmer - Proves to be one of the worst trades in NFL history, setting the Raiders back 5 years.