Back in 1992, from Dublin to Toulouse on Air Toulouse when they flew the Caravelles, before being replaced by B737's.
The aircraft was ok, at the time I actually thought it was ancient, just shows wisdom comes with age.
The fuselage was perfectly circular because the door lifted straight up on tracks along the roof. When the door was shut the air hostess just reached above her and slid it down into place. The use of air brakes on the approach also meant that it was quite bumpy (perhaps that was what everybody meant in the above posts re: turbulence) Now todays air brakes are smooth etc.. on this aircraft the pilots had to make an announcement to the cabin to disregard the severe buffeting, thats how much the aircraft shook.
ps On quite a few articles this feature has been mentioned so it wasn't the pilots mucking about.
Aircraft I've flown: A300/A310/A320/A321/A330/A340/B727/B732/B733/B734/B735/B738/B741/B742/B744/DC10/MD80/IL62/Bae146/AR