Wayne Martindale, currently on the Board of Missions, has also served on the Council of Elders. Truthfully, he might have had a hard time whittling down his list, but here are the ten (or so) books he would take if stranded on an island.

The Bible, an ESV Study Bible
Calvin's Institutes
C.S. Lewis: The Screwtape Letters, Perelandra, "The Weight of Glory" and Other Addresses
A good biography like David McCullough's John Adams or Eric Metaxas' Bonhoeffer
Fyodor Dostoevsky, The Brothers Karamazov
Alexander Solzhenitsyn, One Day in the Life of Ivan Denisovich or In the First Circle
J.R.R. Tolkien, The Lord of the Rings
John Keats, Complete Poems
Samuel Johnson's Essays (usually several volumes by series name, like The Rambler, The Idler, The Adventurer)
James Boswell, The Life of Samuel Johnson