Check out Sarah Palin's appearance on Saturday Night Live. I'll give her credit -- she won some good laughs, poked fun at her own image (Caribou Barbie), and smiled through it, even as she took some shots, especially from Alec Baldwin who was delightfully clueless (though he had so few lines, you'd think he would have been able to memorize them instead of looking at the cue cards all the time).
Plus, watching an extremely pregnant Amy Poehler doing the "Sarah Palin Rap" with two Eskimos, a Todd Palin impersonator, and a moose while Palin chair danced was bizarre in the extreme.
I guess this was a good thing for the McCain/Palin campaign as it might have buffed out a bit of that "fanatical" image that she's been building among the Republican true believers. Did it defuse the brilliance of Tina Fey's impersonation? No, it actually highlighted it as the two women passed each other in the opening segment but that was still funny. And the rap? Neither McCain nor Palin really came out of it smelling like a rose yet again, it was so over the top, it too was amusing and Governor Palin clearly was playing along. While she looks well suited to be on TV, I don't think this appearance did anything to prove that she has the chops to be President, though.
On the other hand, maybe they thought that this was a suitable replacement for an actual press conference...