Amazon.com : B + W Circular Polarizer Kaesemann - Standard Mount (F-PRO), HTC, 16 Layers Multi-Resistant Coating, Photography Filter, 77 mm : Electronics
B+w 1100755 82 mm Polarizing Filter Black | Techinn
B+W 49mm MASTER High Transmission Circular Polarizer MRC Nano Filter — Glazer's Camera Inc
POLARIZING Filters | B+W
Simple demo shows the power of a polarizing filter: Digital Photography Review