Of course this is not RNAi but it's the kind of technology we like to keep aware of here at the DRSC. So I thought I'd share it on the blog.
Gratz SJ, Cummings AM, Nguyen JN, Hamm DC, Donohue LK, Harrison MM, Wildonger J, O'Connor-Giles KM. Genome engineering of Drosophila with the CRISPR RNA-guided
Cas9 nuclease. Genetics. 2013 May 24. PMID: 23709638.