Because I do. I'm working on a set of tests for an article comparing TOP, MAX & ROW_NUMBER. I have a simple data structure and I need a bunch of data in order to create my tests. I wanted that data to be distributed a certain way, to mimic some production system behavior I've seen in the past. Last night I got it all set by mucking about with the seed values of the various columns to get it just right and load up millions of rows in only a few minutes and doing this all on my lap top. Great tool!