For John, BLUF: Ugly, but we were fairly quickly on top. Nothing to see here; just move along.
The attack came as a major shock to America, and galvanized folks into action.
A tactical success for the Japanese, it was an operational and strategic failure. They didn't get the American Carriers. They didn't destroy the ship repair facilities (e.g., dry docks) and they didn't destroy the fuel stocks.
Hat tip to the InstaPundit.
Regards — Cliff