My personal favourite was a charter helicopter that plonked on the RFDS aeromed bay. Bad enough, but to make it worse an arriving RFDS med one was taxiing for the bay and the waiting (blocked) ambulance. When the SMC told the chopper to move (in no uncertain terms) the response was something like 'our pax are just disembarking, we'll only be a minute..." Some anonymous voice on frequency asked them if they parked in wheelchair zones. I guess they probably do.
Some people are just way too important for their own good.