I think that "What is the most under-valued part of .NET?" should get a historical lock.
I don't believe that's because I have a combined total of 197 upvotes on the question (as of 3/29/2012). Rather, I think that it is one of the better unconstructive questions, and received very many good answers. Most of the answers were appropriately short and to the point.
BTW, I also recognize that bringing it to the attention of meta may cause the final delete votes to be cast!
Update: The question has been undeleted. While I appreciate the risk that this update will cause it to be deleted again, I'd also like to stimulate more discussion on protecting it or not.