I use a few from each of the following sites. ~Danny~

About.com = Links to other download sites:
http://graphicssoft.about.com/od/photoshopactions/

Action Central (Jim Lewis) – Home of many great actions:
http://www.AtnCentral.com

BytePhoto – Frames, art, utility:
http://www.bytephoto.com

Chainstyle.com - Robert Anselmi. Frames, patterns, photo-sphere and more:
http://www.chainstyle.com/freebies.html

Cybia.co – Resizing:
http://www.cybia.co.uk/actions.htm

Eric’s FX – Text, arty, misc.
http://www.gormly.com/ericsfx/

Hoon’s - 2 frames and a watermark action:
http://www.imphotography.com/downloads/sampleactions.htm

NYPhotographics: Digital camera specific, interpolation and curve settings for cross processing:
http://www.nyphotographics.com/ftppage.htm

Outdoor Eyes – Scroll down to “Digital Imaging”. Frames, art, general purpose:
http://www.outdooreyes.com/photosection1.php3

Shan Canfield - Cross processing, sepia and others + Great Tutorials. Click Shanzcan Tutorials button; action downloads are included in the tutorials.:
http://www.shanzcan.com/photoshopahol.html

The Light’s Right (Glenn E. “Mitch” Mitchell II) – Numerous general purpose actions that compliment Glenn’s well-written tutorials:
http://www.thelightsright.com/DigitalDarkroom/PhotoshopTools.htm

Timo’s site – Various. Select language on the home page:
http://www.timo2000.de/

The DPReview Retouching Forum Action Collection, started by Dr. Randall Smith. An exceptional collection (if I may say so myself) of photo-art, digital frame and general purpose actions.
www.geocities.com/kafuensis/

Adobe’s site. Everything from soup to nuts (free, but registration required):
http://share.studio.adobe.com/Default.asp

Mathias Vejerslev’s site. General purpose and all very good:
http://www.96ppi.net/photography/actions/

Trevor Morris’s site. Some real good ones here:
http://user.fundy.net/morris/photoshop20.shtml

Mike Finn – some of the best photo-art actions on the planet, mostly free:
http://homepages.slingshot.co.nz/~mikefinn/action.html

Retouch PRO (you must be registered before you can download): Miscellaneous, including some photo-art:
http://www.retouchpro.com/forums/showthread.php?s=&threadid=2767

Retouch PRO (you must be registered before you can download): Mostly Photo-art:
http://www.retouchpro.com/forums/showthread.php?s=&threadid=2653

Retouch PRO (you must be registered before you can download): Mostly digital frames, edges:
http://www.retouchpro.com/forums/showthread.php?s=&threadid=4298

Fred Miranda. Target audience: Photographers using digital cameras. No longer free, but a lot of actions from which to choose.
http://www.fredmiranda.com/actions/

Thomas Niemann’s site. BW toning actions. Click Black and White, then Classic Tones:
http://epaperpress.com/psphoto/

Adobe Evangelists – Some scipts, too:
http://www.adobeevangelists.com/photoshop/actions.html

Chainstyle.com. Mostly textures.
http://www.chainstyle.com/photoshop/webhelp/cd_content/downloads/free_downloads.htm

Bill Richardson’s actions (frames, edges, photo-art):
http://www.outdooreyes.com/photosection20.php3

Shouchen’s site. Lots of interesting stuff here:
http://www.photozo.com/forum/viewforum.php?f=2

Peter Sill’s site. Photo-art and some general use actions:
http://www.digitalfocus.net/downloads.htm

Edge effects which are compatible with Photoshop 5.0 and above:
http://www.liknes.no/photoshop

Scott Higdon actions. An interesting assortment:
http://www.cshigdon.net/

Johny Akerlund actions. Some great black and white and toning effects:
http://www.jakerlund.net/

Marc Jutras Digital Lith action:
http://www.marcjutras.com/

Bud Guinn frame and matte actions:
http://users.adelphia.net/~window/Actions.htm
also available at…

http://www.bytephoto.com/modules.php?s=1957f8e81515876c8975440df5418c2c&name=Downloads&d_op=viewdownload&cid=2

Photoshop Café; mostly text effects:
http://www.photoshopcafe.com/actions.htm

Several action collections:
http://www.elated.com/actionkits/

Al Ward’s site. Click the button labeled Downloads. Mostly text effects:
http://www.actionfx.com/

Text, art, texture assortment:
http://www.actions.8m.com/actions_all.htm

Text effects, some free but mostly for sale:
http://www.actionaddiction.com/

Text, textures, image effects:
http://www.teamphotoshop.com/forum/vbforum/forumdisplay.php?s=&forumid=33

Paul Larson’s site. The Matt Hardy actions are very good. Check the action forum, too, where you may find additional downloads:
http://www.bytephoto.com/modules.php?s=&name=Downloads

Color to Black and White (Russell Brown method) and Infrared (2):
http://www.nickgallery.com/web_pages/technical 7.htm

Olli Nuutinen’s Canon 10D 6MP actions. Extremely well organized.
http://koti.mbnet.fi/~ojn/6mpix/action_actionpack.html

Links to other action sites or forums:
http://www.websitetips.com/graphics/ - actions
http://www.shutterfreaks.com/Actions/Actions.html
http://www.teamphotoshop.com/photoshop/actions/actions_download.php
http://www.digitalthread.com/photoshopactions/actionsets1.html

After the fun runs out at the above sites, do a search using your favorite Internet search method such as http://www.google.com/ or www.DogPile.com (or) and use “Photoshop actions” as a search argument.