You have just GOT to see [this][1]. A related entries plugin unlike any other ... but, alas, on EE.
[1}: http://www.solspace.com/docs/entry/relatedentriescppublishedit_tab/
This is by an outfit called Solspace that makes extensions, addons and plugins for [EE}[]. What this one does is:
- Adds to the publish/edit screen
- Shows up a field for related entries
- Allows you to search a blog or set of blogs for all entries that match the tags or keywords you specify
- Assembles an array of these 'related' entries
- Allows you to select one or more of these 'related' entries and attach them to your new post (sort of: see also: ... list of related entries).
- Allows reverse related entries, forward related entries, or both, so that even earlier posts can reference newer posts. Keeps content fresh and updated.
It's truly amazing. Can we please, please, please think of something like this in perl for MT? Anil?
Reported on Movable Type 4.2

Damn! Markdown! Really need a preview for posts!
The link is here
Hi Gautam, that seems pretty similar to what you can do with just template tags in MT -- have you looked at this page on the Wiki? I haven't tried that yet myself, but it seems pretty similar.
Often times, you don't need a plugin in MT to do what takes plugins in other systems, because the templating language is so powerful.
Not quite, Anil. The wiki recipe puts out all entries that share tags with the present entry. This EE plugin lets you choose from the full array at the time of writing the new post. That, really, is what makes it so interesting: the fact that it goes into the dashboard interface. Otherwise, you have to keep a fairly tight control on tag usage, and this can be a nightmare with multiple users/profiles.
Oops! My bad. The voodoo exists, thanks to Mark Paschal (who else). Revision 1112 of his LinkedEntryCustomFields, still available only over at the subversion, pretty much does this.
Perhaps LECF still needs a few refinements:
I find a combination of LECF and my own 'recipe' for related entries (referenced by Anil above) works very well.
What I did was this:
Now at the bottom of each post, you can have a section that says: See also and list all the three immediately relevant or most relevant related entries, i.e., the LECFs; and in the sidebar, list all others that share the same tags (excluding the current post and the three LECFs). Works quite well, if a bit clunky.
http://code.as-is.net/public/wiki/TagSupplementals_Plugin is a great plugin for related entries.