I use LR just for cataloging purposes and slight exposure and other ACR adjustments but then immediately export over to CS5.
i use a combination of different various actions as well as other plug ins which pretty much are all some form of curves adjustments with masks.
here is one i really enjoyed that i ended up printing on metallic paper in 8x10 which came out amazing. the tones and color blew me away.
DSC_5099 reedit by nextelbuddy, on Flickr