When I was a postdoc at Dundee I wrote him a letter thanking him for doing a great job as manager, but mentioned a big weakness at the back (Kevin Bond's position - hint, hint). I suggested he look at a Dundee defender (captain there) who I suggested would do a better job. He took the time to write back saying he'd sent a scout to have a look but he (the scout) didn't think the player was any better. I was surprised he had taken the time to write back a nice reply, and even more surprised he'd sent out a scout. Top bloke.