Jesus (naturally). After that...Billy Graham and Chuck Swindoll. And after those two, I'd probably say either Tony Danza or the cast of "According to Jim."
Arrested Development, Family Guy, and The Simpsons.
The Divine Conspiracy by Dallas Willard. Through Gates of Splendor by Elisabeth Elliot. Blue Like Jazz by Donald Miller, and his follow up book, Searching for God Knows What.
My Dad. Billy Graham. Chuck Swindoll.