OnOne Software has released a batch of free Adobe Camera Raw presets. From their web page:

Designed to work the way you work, the PhotoPresets with One-Click WOW! tackle only one development parameter at a time allowing you to optimize your image at each step to create the look you really want without sacrificing any one quality. You start with adjusting your images color and tone and then add effects like black and white conversions, tinting, split-toning and vignetting. With 85 presets in 6 categories the number of combinations is astounding.

I haven’t had a chance to play with them yet myself, so I can’t speak for how useful they are, but since they’re free it can’t hurt to try that out and see if they’re useful. Feel free to leave comments here letting me and the other readers know if you think they’re worthwhile or not.