Not in the same league, but anyone remember the Sunderland fly-by? I was AIR ARR on 09L and SVFR rang to see if I fancied a run by a Sunderland (what a daft question). It duly appeared on the DFTI and I cleared it for a low approach and go-around with a left turn on course for Leavesden. It vanished from the DFTI and I couldn't see it. Peering through the bins I saw it - so low that it was below the buildings on the north side. It did a left turnout over the 27R threshold and must have crossed the M4 at about 200 ft!! I was scared that everything would hit the fan... but it didn't. The AFS watch boss rang with a moan - I hadn't told them and "the lads would loved to have seen it"...
Then, of course, there were Pete Bish's Daks.. but that's another story.