If, instead, Obama resorts to a petulant snipe-fest in which he tries to score debating points against his potential 2012 rivals - he will turn off a huge share of his audience and confirm for many what they already think of him - that he is shallow, partisan and non-Presidential.
Now, it is certainly not out of the question that he will make such a huge mistake (given his equally huge ego), but I would be shocked if his political advisors (David Plouffe, Valerie Jarrett) allowed it. Instead, look for a nominally even-handed "let's-all-work-together-for-the-greater-good" kind of speech, peppered with occasional hints that the GOP needs to agree to meet him halfway.
he can huff and puff all he wants...nobody will be watching. I personally will pick it up on a FReeper thread while I watch the really important event, Thursday Night football.