I remember the one at Honington - the model was very primitive and it was like looking over a rolling cylinder rather than a distant horizon. Electicity pylons looked like the Eiffel Tower and the cables were like railway lines.
Spiders were amusing, but a giant wasp certainly wasn't....
Early digital images for the VC10 simulators were less fun - the mafia staff car at Palermo was rather amusing, but there was a picture mismatch at Manchesterrr which often resulted in people taxying through the duty free shop!