What is your biggest one that you can remember?

Me and my mate Mick had been travelling the world for nearly a year when;

We were in England and Mick didnt want to leave just yet as his parents were about to come out to England and then to Holland but he didnt know their exact flights or anything as yet.
We were sick of staying with my Granddad in Southfields ,him wingeing at us all day and washing ourselves out of a tin tub on his back steps etc .

So we booked our flights out anyway as we had a round world ticket so if theres free seats they are yours and we got on a train and headed for Heathrow to fly to LA for a change of senery.
We got off the train and as we walked up the platform in between the thousands of people in the airport ;Micks folks came down the same platform towards us from the other way ,we had just enough time for a coffee and a chat and all flew out different ways. They thought they would pay us a surprize visit and catch us when in London.
They sure did

Thats was beyond coincedence for me.