I have not affiliation with them, but I think they have done a good job with these presets, so... perhaps take note of this as well
So, I want to make an offer to thank everyone for their support over the years. Brandon has authorized me to offer a 75% off coupon for any product offered in the X-Equals store. With this coupon, you can get XeL:Black and White for $5. Please consider giving it a go, the preset emulations in this collection are much better than the black and white presets available here. And within the week, we will be updating the product for Lightroom 4. If you purchase XeL: Black and White now, you will get an email with a free download link for the updated product as soon as its available.
So, head on over to X-Equals and use the coupon code LIDF at checkout to get 75% any purchase.
I downloaded also all the color presets from the lifeindigitalfilm website, which I used a lot in LR3 (and they are free). In LR4, results are not the same...