Building a "between filter"? Any ideas welcome..

Hi,

I'm sure there's a good way to solve this problem and I'm hoping for
some insight into the best approach.

I'd like to be able to fire a "filter" event off _between_ the action
and the view. Right now, as I understand it, filters work like so:

BEFORE FILTERS RUN
ACTION RUNS
VIEW PROCESSING OCCURS (several steps)
AFTER FILTERS RUN

I'd like to find a way to add additional events so that:

BEFORE FILTERS RUN
ACTION RUNS
==> "BETWEEN FILTERS" run
VIEW PROCESSING OCCURS (several steps)
AFTER FILTERS RUN

Does anyone have any ideas? Maybe there's a major architectural reason
why this is a Bad Idea, but I'd like it for setting up generic view-
related state data that depends on the results of the action. For
example, let's say I want to create some meta-tags that have some
dependency on business logic and processing that occurs in the action.
I'd like to construct an array of meta-tag elements in the "between
filter" and make them available to every view in that controller.

Right now, I'm putting a "generate_meta_tags" method at the end of
every action, but that doesn't seem like the "Rails way." Any
suggestions are welcome, and apologies if this is a bone-headed
question to which any moron would already know the answer! : )

Steve