I think that overall, I feel a lot like how John Hinderaker felt after watching it:
Events like last night’s always leave me feeling in need of a shower. Partly it is because there some truth to Kimmel’s joke, after noting that the room was full of politicians, members of the media and celebrities, that “Everything that is wrong with America is here in this room.” Partly is is due to the sense that everyone involved in the event is pretending. The politicians pretend to engage in self-deprecation that shows they don’t take themselves too seriously. The comics pretend that they are just trying to be funny, lampooning politicians impartially in search of laughs. But, even though some of the lines are indeed funny, the premise of the event is fundamentally false. In fact, politicians, comedians and even the celebrities present are pursuing an agenda that is both self-aggrandizing and political. That is why, I think, such events always leave me feeling unclean.
And I agree with Pat Sajak that the dinner should probably be gotten rid of, just as should the State of the Union address in its current form.