Patrick Long recently blogged about some new ASP.NET (and WinForms) controls released on CodePlex that are specific to the health care industry.  Several of the controls are AJAX-enabled (based upon the ASP.NET AJAX Extensions and the Toolkit) and as I went to download them I found an online demo available here.  I wish I would've had some of these controls on past health care projects I worked on.  An example of one of the more robust controls called MedicationGrid is shown below: