Thanks for all the responses and thanks yuvalpe for identifying the original source of that query. Like I said, I never claimed to be the author. And I looked for the original source.

MrAkki: The only problem I see with that is that if you are building this in the early stages of building a database you could end up with a smaller numbers table than you need. That can ALWAYS be solved by adding more cross joins, but I liked this simple approach and it performs quite well.

I wasn't attempting to list every possibly method for creating a numbers table, just a few different ways with some pros and cons of each.