Filtering for a Date Range on Data View Web Parts

So I was trying to set a date range on a data view webpart and found that the filtering was very limited. Luckily I found this article: http://blogs.msdn.com/sharepointdesigner/archive/2008/02/25/filtering-and-formatting-with-date-values.aspx#filter_list_on_today_offset. It is part of a larger article that talks about many different date filtering options in SharePoint. It solved my problem and is a good reference for the future.