Our most popular videos on YouTube is the Long Exposure tutorial that Scott Kelby was kind enough to do for us (and you).
Here is that video:
The two most important tools for using this technique is a tripod and an Neutral Density filter, and I frequently get emails asking "where can I get an ND filter?".
Well, I have a great answer for you today, you can get a Tiffen 77mm Variable Neutral Density ND Filter, that will allow you to go as low as 2 stops and as high as 8 Stops, for just $169 (with free shipping).
I am sure some of you are thinking "well that's great, but my lens is a 68mm, so this deal isn't for me". Yes, this is for you as well.
When I buy a filter I buy it to fit my largest lens (which happens to be 77mm) and then purchase a "Step-Up Ring" that will bring any lens from it current size up to the desired size (in the case 77mm).