Showing Related Entries With the Same Tag

I want to be able to add a module to the Entry Template that will show other entries that were tagged with the same word when a site visitor is viewing a particular entry.

At the bottom of the entry I want to be able to display a list of other entries that are tagged with the same word as the entry in context.

I thought I could use the entries tag list and have the tag equal the tagname variable.

But that doesn't seem to work.

This is what I tried:

  <mt:Entries lastn="5" sort_by="title" sort_order="ascend" tag="<$mt:TagName$>">
<p><a href="<$mt:EntryPermalink$>"><$mt:EntryTitle$></a></p>
    
</mt:Entries>

I also tried using the list and the list as well.

Any help with this would be great.

Thanks,

V