A commuter I used to work for had a plane accidently land at Santa Maria instead of San Luis Opispo. They told the pax that they had landed at a runway too far away from the terminal and would take off and land again at a closer one. Well, that was kind of true.
During Continental's strike a scab plane landed at a small GA airport just north of Burbank, I think it's called Whitestone.
I have been on a flight to SWF, Newburgh, on the jumpseat and had to strongly advise the Captain that the airport he really wanted to go to was further east and that was why the LOC needles were full swing. He was, of course, trying to visit Orange County, the GA airport.
MS