I'd be willing to give this talk on a Scheme DSL for pure logic programming.
William Byrd has two videos covering a long talk he gave about miniKanren here, and this talk would cover the same material. The obvious goal is to get through the metacircular evaluator, but I doubt I could do this in an hour (it takes him 2.5 with some digressions), so it might have to get split into two pieces.