If you modify the view  you can select  up to 3 filter  values. But you have to do
it from the Modify view. You can do it directly in the AllItemsView.aspx

maybe I didn't make myself clear enough. How do you select  more than one
item to filter  on from the same metadata column? For instance, I have a
metadata column that contains the values, A, B, C, D, and E. I want to apply
the filter to only show items with the metadata value A, and C. (The reason
that views  won't really work out well is that this filtering will be extremely
dynamic and will change frequently, since the information in one of the columns
we want to apply the filter on is "Date".) I hope that clears things up a
little.

I don't think you can filter  on multi choice columns.

Anybody figure out how to do this? I know that you can do it in the
edit view  options. I would like to move that functionality out onto
the web part page itself. The view doesn't work as we may want to
filter different items in that column multiple  times a day. I would
like the on the fly view filtering options on the page itself. Anybody
have any ideas?

You might try one of the SharePoint filter  web parts. You add it to
your page and can then filter the list  based on the value the user
provides to the filter.

I also recommend trying the filter  web parts. There's even one called
Filter Actions that even allows users each to save their own filter
choices.

Come see me speak about web parts at the SharePoint Best Practices
Conference (www.sharepointbestpractices.com)

You can do it in the edit view  settings. Is it possible to take the
code from that and make it a web part?

You would have to write your own custom webpart to enable this kind of
functionality. It can't be done in the standard ListView or in the user
interface of the Data Form web part.

If I recall correctly, you can filter, but you cannot sort on a column that
allows you to select multiple  items. This is slightly different though, as this
is not a multiple choice column.