Who is Bert Sugarman and what is The Midnight Special?

If you are a fan of classic rock, which I am, then watching old episodes of Burt Sugarman's Midnight Special is a real treat.  I went through a phase of watching many episodes of some of my favourite musical acts playing in their hay day.
Here is Badfinger playing on Burt Sugarman's Midnight Special.
https://www.youtube.com/watch?v=LkAu3ijigeA&index=6&list=PLF5668BC3B6D66F9D

When I turned 23, there was a period of time when I wanted to change my name.  The name I had selected was Bert Sugarman, changing the spelling just slightly. For some odd reason I found no one who supported this decision and I re-thought this change. I guess I will remain Courtney Tuck….for now.
https://www.youtube.com/watch?v=i3O6kZu5oDQ&index=9&list=PLF5668BC3B6D66F9D