I recently wrote an extension library for Sitecore to simplify setting values for fields.
Because of the way the specific field classes are created in Sitecore, setting values specific to the type of field can be tricky. For text-based fields, like Single-Line Text, Multi-Line Text, Rich Text, and a few others, you can actually set the value directly on a generic Field object with relative ease. For more complex types like lists, links, and images, though you can set the value directly on a generic Field object, setting the more specific options for the value needs more care.
So, I wrote an extension library to look at the Field type and set the value using the best method for that type. It worked great as far as I could tell, until I looked a little deeper during my "QA phase". And wouldn't you know it, it turns out there is a funky behavior with the list fields.
