We interrupt your regularly scheduled politics for another moment brought to you by Sarah Palin. Palin is set to dominate yet another week. Her unique blend of celebrity, media, pop culture, and -- yes -- political engagement is again delivering near-ubiquity that's all the more remarkable for the fact that she does not actually hold any public office -- and that she's coming off of an election cycle with an endorsement record that's spotty at best. That aside, the cable program about her family is setting records for TLC. Her daughter is a finalist on the TV sensation "Dancing with...