I am surprised Ask Jeeves doesn't have their St. Patrick's Day logo up yet, must be a slow start. Last year, the engines came up with nice logos for the day, even Jeeves. I expect to see one shortly for Jeeves.
Google and Yahoo have, not MSN or Jeeves (at this point).
Update::: Max informs us that Ask has posted their St. Patrick's logo:
Nice touch, but the smart answers are even better.