You can use a macro in Microsoft Word to generate a sample document that shows each font installed for the currently selected printer. This macro is produced and distributed by Microsoft. Get it at:

Word Font Macro

Here's a site that gives you a step-by-step approach to using their own, similar macro to do the same thing in Word:

Font Macro Instructions

If you use a wheel mouse, you can use it to scroll your fonts in the effects window. You select your font and size and then select the font in the list and if you scroll the wheel, you can see the fonts change in your preview window. This is really good for composites because you can see how each font works with the layers you have set up.
It can be tricky getting them to scroll, because I think this is windows, not vegas behavior. It won't scroll through an entire list of fonts, so you have to try it a couple of times, but I find it really helps pick which font works for the piece.

Anyone use this? Is there a way to scroll through all of your fonts?

I've got a copy of a tiny (36kB) showfonts.exe program that will display (not print) the name of and show the actual font, and allow one to scroll through all the installed fonts on one's system. It was provided by a user on this forum last spring. I just checked the link, and although the website is still up, the program is not. I can email it to you (or anyone else) if you want.

johnmeyer - the link that jason gives above also has a piece of freeware called seeker that does exactly what I was looking for earlier ("find text and replace"). LOL

Frenchy

I like font-o-matic, found here:

http://www.grafxfreeware.homestead.com/fontomatic.html

It lets you display fonts by font family, so if you're looking for, say, script fonts, you can see just those. Shows the fonts in various sizes and all the characters.

Fontlist (http://www.bitstorm.org/fontlist/) is another good one that lets you specify a phrase, then it generates a web page with all the available fonts.