These Plugins are fantastic and used by the Pros.

They can be used in Lightroom, Photoshop, Photoshop Elements as well as on their own. 

Google is re-releasing the complete collection of Nik plugins

including Dfine, Viveza, HDR Efex Pro, Color Efex Pro, Silver Efex Pro, and Sharpener Pro — for only $150.

The plugins, which will no longer be sold individually, used to sell for $100 a piece.

http://www.niksoftware.com/nikcollection/usa/index.php?view=intro%2Fmain.shtml