Title: IEM Potpourri Abstract: Since 2001, the Iowa Environmental Mesonet (IEM) has been efforting the collection of various datasets. This effort has yielded a data warehouse over two terabytes in size and a good number of 'war stories' detailing its acquisition. This presentation will provide a "potpourri" of caveats, gotchas, catch-22s, and disclaimers to many of the datasets researchers use every day, some of them provided by the IEM.