As noted already, support for CSS3 effects and transforms is irregular, and a work in progress. Within that framework, the four available transforms (scale, translate, rotate, and skew) are relatively stable and widely supported. Effects, on the other hand, are even less consistently supported, and less finite in the sense of there being a "list" of available effects that are supported (albeit with unique coding prefixes) across browsing environments.
Part of the reason for this is that a number of effects are very flexible. For example, the text-shadow effect can be tweaked to produce outlined type, as shown in the following screenshot:
With what has been discussed so far about the flexible and open-ended nature of CSS3 effects, let's examine three of the most useful effects: opacity, border radius, and sadow (for both boxes and text).