St. Thomas Aquinas' Fifth Way was the first argument that convinced me that a Cosmic Designer exists. It remains as persuasive today as when I was in high school.
1. Whatever lacks intelligence and exhibits order and regularity is the result of design. (Premise)
2. The laws of nature lack intelligence and exhibit order and regularity. (Premise)
3. Therefore, the laws of nature are the result of design. (From 1 and 2)
"Who designed the designer?" won't work as an objection, as poor as it is, for at least two reasons.
First, in order for an explanation to be best, we don't have to have an explanation of the explanation. If a group of archeologists discovered pottery, they wouldn't have to know who designed the pottery or where the civilization went. Secondly, the Cosmic Designer would transcend the laws of nature. Since it is impossible to design something timeless, the question is irrelevant. Whatever is timeless is also changeless, since time is a measurement of change. Moreover, whatever is changeless cannot be designed, since that would entail a change.
Hence, the village atheist's objections to the Fifth Way fail as anything close to rebuttals to what Thomas has to say.