Misc: What did Roger Buell do for a living in The Mothers-in-Law?

Questions

What occupation did David Jason, Lech Walesa and Ricky Tomlinson all once have in common?

The followers of John Wycliffe were given what nickname by their enemies?

Which word is the Latin for 'pebble' and is now, applied to a branch of mathematics?

In which sport does the term 'to win hands down' originate?

What is the name of the fibrous protein present in the outer layer of the skin and in hair and nails?