But we asked our Facebook readers who they had met who had been pleasant to them – and loads of suggestions were made.
Here are some of those who make it into our nice hall of fame.
1. Rowan Atkinson
Lee Cherone said: 'He was queuing for a coffee in front of me at Goodwood. I didn’t realise it was him at first as was on my phone texting. He turned and and said hello, we then got chatting and he ultimately bought me a coffee.' Photo: Sarah Standing
2. Linda Lusardi
Yvonne Shelley said: 'She asked to borrow my lipstick at a function 30 years almost ago - very lovely lady.' Photo: Derek Martin
3. Kriss Akabusi
'He used to come in the cinema I worked in - such a lovely guy,' said Samantha Gratton. Photo: Paul Franks
4. Michael Ball
'Michael Ball made me a cup of tea while I was working in his house,' posted Paul Molloy. Photo: contributed