There seems to have been a fetish with pineapple generally - the aforementioned cheese and pineapple hedgehogs and I always think pineapple on gammon is nothing to do with taste and everything to do with sudden availability of tropical fruit.

Agree on Beef Wellington - I've had several formal dinners at the Palace of Westminster (sorry, one needs to name drop occasionally ) and it's a staple there. If done well, it can be terrific