One of our new branch members was asked that question by someone at his place of employment. A co-worker has noticed a difference in Larry's demeanor since he was baptized last Spring. Larry told him that he had been baptized into The Church of Jesus Christ of Latter-day Saints. He took the man into his office and explained what it has meant to him. I hear stories like this all the time.
I remember Brother Howe, of the WC Stake High Council telling us in a talk at the Branch that when he walked into his work the Monday after he was baptized, a co-worker exclaimed, "You're as shiny as a new penny! What's happened to you?"