In fact, Palin was such a fan of Biden's recent remarks, she repeated some of them just to make certain people didn't miss out.
This was all sarcasm.
Her "thank you" to Biden? For a recent statement he made about foreign affairs under an Obama presidency.
Two days ago, Biden predicted an international crisis would occur if he and running mate Barack Obama were elected to office.
“Mark my words: It will not be six months before the world tests Barack Obama like they did John Kennedy,” Biden said. “The world is looking. We’re about to elect a brilliant 47-year-old senator president of the United States of America. Watch, we’re going to have an international crisis, a generated crisis, to test the mettle of this guy.”
What Biden was attempting to say according to the Obama-Biden team, was that all Presidents are tested. That's the nature of the job.
“Sen. Biden was making it clear that history has shown presidents face challenges starting on day one, and with our nation fighting two wars and 21st century threats abroad, we know that we need steady leadership in tumultuous times, not the erratic lurching and stubborn ideology of John McCain,” said Biden spokesman David Wade.