[SLUG] Well-known contributors to Ubuntu history

[Jon <jonjermey@xxxxxxxxxxxxxxx>]

I'm putting together a book about Ubuntu, and I would like to include a 
list of people who have made the most significant contributions to the 
development of Ubuntu and Linux in general. I have the usual suspects -- 
Linus Torvalds, Richard Stallman, Andrew Tanenbaum, Ian Murdock, Mark 
Shuttleworth -- but after that it's hard to clearly see who stands out. 
Perhaps some of you who have a longer history with Linux than I do could 
indicate who really made a difference for you, and why. I want to say 
something more than 'X is a really great developer' if I can. Pointers 
to quotes or interviews would be handy too.

Thanks in advance,

Jon.