John MacArthur has been the pastor of Grace Community Church since 1969. The most distinguishing characteristic of MacArthur's long ministry is his commitment to biblical exposition.
Last Sunday (June 5, 2011) marked a significant milestone in the life of Grace Church. John MacArthur finished preaching through the entire New Testament. I am unaware of any other preacher in modern church history who has accomphlished a similar project. Keep in mind that MacArthur does not rush through books of the Bible.
He completed his journey through the New Testament by preaching through Mark's Gospel. You can listen to the final sermon in that series HERE.
Also, on the previous Sunday evening, Pastor MacArthur held a Q & A with the congregation. He answers questions concerning his completion of the New Testament as well as general questions about his ministry. It is worth listening to.