This one-man performance by Ian Ruskin at Conway Hall on 7 July looks as though it could be good:
To Begin the World Over Again: The Life of Thomas Paine
This series of seven short videos by Ian Ruskin about Thomas Paine is well worth watching:
If you don't know much about Tom Paine and his ideas, you could try my short biography of him:
which has links to other sites where you can read his actual words.