I heard John Ortberg speak last week on the topic of the easy yoke. Got an autographed book from him :)
He speaks as good as his books, and I like his books.The beginning of his talk was a little slow, but he warmed up and had a lot of insights into the Christian life. I like the way he can quote Dallas Willard, and repeat the quote a few times, without notes. He must use these quotes a lot.