Addendum: if you have Photoshop CS2 or later, you can do pretty much everything you see above without the use of Imageready. Just go to Window > Animation and you'll get the little animation timeline window thingy.
Also, if you want to upload animations on dA WITHOUT using a preview image, your animation MUST be 150x150 pixels or less. /end addendum
Since I've been getting asked a lot about how I animate my pixel arts, I figured I'd make a tutorial about how I do it. This tutorial only covers Adobe Photoshop and Adobe Imageready, but if you have any similar programs, you may be able to tweak this a bit to fit your program a little better.
I may end up making another animation tutorial later, using a freeware program since I realize that Adobe programs are not exactly cheap to acquire (unless you pirate it, which I really don't recommend doing). Anyway, have this for now.
Basic pixel art tutorial:
(I may have to revise this later; it's a bit old)
(click to view)