UrbanFonts has a huge collection of free fonts in dozens of categories. One of those categories is Famous Fonts, where you can find Batman Forever (pictured above). Granted, this isn’t the type of font one uses every day, it will most likely find a use once or twice – thus making it worthy of download. Be sure to check out the rest of the Famous Fonts.
Ballpark font for your sports-themed designs
Among the 600-plus fonts that FontSquirrel offers, free for commercial use, Ballpark is one of those fonts that you don’t use often, but you’re glad you have it when you need it.
FontSquirrel is one of my favorite font resource sites, and I highly recommend bookmarking it for future font searches.
Jane Austen: A unique and readable calligraphic font
The League of Movable Type has released Junction, a beautiful sans serif typeface with an old-style serif look to it. Junction is an OpenType font with upper and lower case letters, punctuation and numbers; and is free to use for personal and commercial projects.
Another great grungy font from dafont.com. LL Cooper offers upper and lowercase characters as well as numbers and a reasonable amount of punctuation characters.
Felip Darius has released an update to his popular Helwoodica font. Helwoodica 2.0 is based on the appearance of Helvetica engraved on wood blocks. Another great grunge font, available for free.
Another great font available for download at DaFont.com. Northwood High contains upper and lowercase letters, numbers and a few necessary punctuation characters.
LunaBar is a pretty cool script font, available for free over at DeviantArt. You can never have too many good script fonts, I always say!
Quicksand, a free sans-serif typeface from Andrew Paglinawan, is a full typeface set consisting of light, book, bold and dashed versions. Quicksand is available in this thread in the Typophile forums, and is totally free.
MyFonts is offering a free download of Zag Regular and Zag Bold, part of Fontfabric’s Zag font family in OpenType format. 
You will need to set-up an account with MyFonts to download the fonts, but it’s a beautiful font and worth the effort!