Here's the best correction I've ever seen in a daily newspaper, from the Las Vegas Sun today, June 2. It sits prominently in the top left corner of page 2. See how they grovel:
The Sun on Friday managed to misspell the name of Mike O'Callaghan, leaving out the "g." Mike served two terms as governor of Nevada and then was executive editor of this newspaper from 1979 until his death in 2004. Since his name has appeared in print, correctly spelled, many thousands of times and appears every day on the masthead of the Sun (next to the name of the Sun's founder, Hank Greenspun), it is hard to fathom how this typo got through. Yet, astoundingly, get through it did, proving once again our human fallibility, a fact the Sun is definitely not setting out to prove. We certainly regret having made this particular error.