Defeat long-distance Netflix returns
If you have a Netflix return envelope with a far-away distribution center address on it, you don't have to return your disc there. You can simply mark out that address with a black marker, leaving nothing but the words "nearest Netflix distribution center" and the Postal Service will drop it in the local Netflix bin to be picked up by the Netflix truck. This will speed up your turnaround times.
This advice came to me via Netflix Fan Elmer Gantry, who received it from a Netflix customer service rep.