Getting a tag’s name

I am trying to customize the tag display page on my blog. For instance, when someone clicks on a tag (say, from a tag cloud), they are taken to an archive showing excerpts of all the pages using that tag.

For the most part, I am using the WP Tag Cloud page for reference.

My question is this – on the Tag Archive page, how do I get the name of the tag that the user has clicked on to get there? Rather than have a generic title, I’d like to have a title that shows the tag that was clicked.

Is there any way that I can get the name of the current tag that the archive is displaying?

Any help would be appreciated! Thanks.