Our parish recently had a conditional Baptism during a Sunday Mass. The man is an immigrant from a developing country. He's always been going to the Catholic Church, but he just wasn't sure if he was ever actually Baptized. He never went to Catholic school, CCD, or any kind of preparatory classes to receive his first Holy Communion, but has been receiving for years. He said where he's from, there's basically a lot of disorder and not good record-keeping. So, the priest suggested he be conditionally Baptized, just to make certain. It was very nice for me to witness.