On his blog, Keith Robison points out a dataset he found in the NCBI Short Read Archive that got him laughing. The study, from Penn State's Anton Nekrutenko, looked into "windshield genomics," or asked these questions:
Nekrutenko and his colleagues scraped bugs off windshield and sequenced them — there was indeed a difference between the bugs in Pennsylvania and Connecticut. Robison adds, "Gotta admit some jealousy — I wish I had this much access to a second-gen sequencer that I could do such a whimsical project!"