Hansen Medical, Inc. (HNSN)

If I had $200 Million dollars to invest, I'd buy controlling position in HNSN, hire Fredrick Moll, Robert Younge, enter a strategic partnership with a quality industry player like St. Jude Medical, take a minimally-invasive cardiac catheter technology that can change the way cardiologist worldwide manage a common heart condition, develop an open architecture platform that is smaller and more portable and can be installed with significantly less disruption to existing facilities than our only competitors product and sell it to hospitals at 1/3 the price of that one competitor's product. Oh...and then I'd set up the business model to ensure continuing revenue to every client. While I'm at it I'd buy out AorTx and incorporate their aortic valve technology to expand into newer and wider markets. If only I could snag Lonnie Smith away from Intuitive Surgical in order to steer this transformational technology and superior business model into an accelerating growth, wide-margin, free cash generating uber-company that I know it can be. Of course, since they are doing that already (except for the snagging Lonnie Smith part), I'll let them keep doing it without my interference and settle for a smaller ownership percentage of in this young, company with phenomenal upside opportunity. While there is some risk investing in a young company in the early stage of development, especially one with only one product; however, since that one product is so freakin' incredible and the company is being managed by very smart stewards with experience and skill, I believe the downside from $400M market cap is minimal. I actually like HNSN's intense focus on a single product that they can then develop multiple future uses and create new markets for. I admire virtually every decision made by management to date.
I loved this company at below IPO prices, I bought a bit more every month since, and I am doubling my position now that it is back below $20. While a bit short of controlling interest, even my small slice in this company will provide me with a ridiculous grin for years to come.