I thought I'd continue with adding more people who inspire me to do physics these two guys are actually connected as one inspired the other.
Neil deGrasse Tyson, I have seen him in documentaries, on youtube and I follow him on twitter. He has a great passion for astrophysics that you can't help to be caught up in.
The next guy is Carl Sagan! How can you not be inspired by him? I remember when a friend first showed me the pale blue dot video on youtube, it blew my mind!