Andrea Mitchell talked about a "remarkably negative" Obama ad -- negative because it shows McCain bragging about how often he sided with George Bush.
In 2000 there was a lot of yapping about the limited involvement of Bill Clinton in Al Gore's campaign. (In fact we've had some of that this year about both Clintons' limited involvement in Obama's.) Yet nobody finds it remarkable that the Republican Presidential candidate is running, actively and like hell, from the sitting President from his own party. In fact, they cluck over Obama's bad taste in bringing it up.