When Mary Beth Buchanan got in a spat with KDKA Radio rabble-rouser Marty Griffin in February, on her very first day on the campaign trail, the moment seemed destined to live on throughout the rest of her inaugural congressional run.

Now GOP opponent Keith Rothfus is making sure of that, in a clever ad that underscores the combative style that Buchanan -- for good or for ill -- brings to the table. We usually stay away from web-only ads (the campaign says it will air on traditional outlets later) but we will make exceptions for stuff that's funny.