The one thing that was previously under the category of "never see this happening" but not anymore, is that the Republican nominee is beating all the Democrat alternatives in the polls. This, of course, will change and no doubt change again.
OK one thing I still don't see happening, even now, is that Hillary will gain enough candidates elected under her own name: It's just not mathematically going to happen. Interestingly, alarmingly, something else just as apparent at this stage is that it's just as certain she's not about to step down: She doesn't have that kind of character, and her husband won't let her

A slightly more interesting question but still somewhat certain is whether Hillary can get some kind of "momentum" in the final weeks (I think we're talking about Virginia pretty much) that would give her a big moral victory, or something similar to give the superdelegates a reason to select her on with some kind of majority-will excuse. Going on past weeks it's just not looking like going to happen, but a week is a long time, etc etc ...
The last thing but the only really important thing is whether the superdelegates decide to go for a big cock-up and, say, Bill Clinton arm-wrestles them into going his way, against what seems to be the "right" choice. If anyone can pull off such a coup-like outcome, it's Bill. I'd still have to bet against it, though, since folks like Bill Richardson (remember, the fat guy at the debates with Hillary, Obama and the other guy) have made huge defections to Obama ... consider this: Richardson promised to endorse Clinton, and also promised that if for some reason he couldn't do that, he would endorse none of the other candidates. Boy, something must have got him off-side, and if that can happen to him, who knows? Obama's nomination may seem very very obvious on the day it happens?
Oh and, the other guy, John Edwards, still hasn't endorsed anyone yet. Fair enough; he's holding out until his declaration actually has some kind of influence. Declaring it now would be like letting off the fireworks while they were stuck on the barge -- everyone would notice it, but would decide not to watch.
CK.