I haven't seen a diary on this, so... I just read a great post on TPM from FlyOnTheWall. Apparently 73 of the remaining superdelegates are actually not people who can choose their own candidate. These so called Unpledged Add-On Delegates are essentially chosen at the state conventions by the winners of the state. Obama already selected 2 of his from Alabama. There are 73 to go. (see the link for more details)
This leaves only 278 free supers left to endorse (as per DemConWatch).
The UADs can already be predicted to go approximately 38-24 Obama. This means on top of Obama's net lead of 96 at the moment (per CNN), he has a lead of 110, including supers.
Assuming they approximately split the remaining pledged delegates, Clinton would have to win the actual remaining supers 194 to 84 to make up his margin. What's the odds of that? Especially if the supers keep rolling out for Obama as they have been for a few days.
I know this doesn't count MI & FL, but it's a nice cushion.