Yes. To link to:
Tread #
Message #
File #
Faq #
e.t.c. The whole list you can find in UT help under PROPER ETIQUETTE WHEN CREATING A MESSAGE.

If you're using IE there's also Copy button at the bottom of the message which copies thread title and # into clipboard so it can be posted easily into a reply.

>
>Does that mean that all I have to do to link to a thread is to preface the thread number with a number sign "#"?