What is that 'link one person to another in 5 steps game'...

[IrrElephant]

Actually called? And who's the person you need to link back to?

I was trying to explain to a colleague today, but, well I couldn't remember the point, or who the person is

Anyone with the smallest idea what I'm talking about, please help

[CoolHands]

6 degrees of Kevin Bacon

[TheEnd]

http://en.wikipedia.org/wiki/Six_degrees_of_separa...

Probably that, although you can vary it.
Hitler is a common finishing player.

[IrrElephant]

Thanks. I can sleep well tonight now.