Years ago I flew with a J4J captain who was telling me about his first flight off of IOE which happened to be a PIT based 737 captain's last flight. The guy was a trouble maker--enough so that apparently nobody wanted to do his retirement flight with him. Anyhow, they blasted off out of Miami to go back to PIT and were given some heading to fly. The FO (the captain telling me the story) read back the heading but his captain punched in the MMJ VOR (about 5 miles away from the Pittsburgh Airport) and said "tell them we're going direct Montour." Apparently this went on with every sector they went in and out of all the way up to PIT with the FO collecting all kinds of phone numbers to call along the way. They eventually got on with PIT approach who tried to vector them into the downwind for the ILS but the captain said they had the field in sight and were proceeding direct the numbers for 32.
They eventually land, taxi in and unload. The captain packs his bag, walks off the plane (with the FO in tow), walks right by the contingent of people with cake standing at the jetway to congratulate him on his career, hands his ID to the chief pilot who is waiting and walks away. The CP comes up to the FO, who is terrified he's about to get fired and asks him what happened because he's gotten all kinds of calls from ATC over the last three hours about one of his planes ignoring their instructions. The FO tells him and the CP laughs and says "that's all he did? I'll take care of it," and walks away. The FO never heard another word about.
Of course, several years later, they DID take the captain's pension away, along with every other pilot who worked there, but I'm guessing that was unrelated.