I hope you realize it's not going to stop after the 20 original albums. There are still a bunch of bootlegs, DVDs and compilations you need to get. After that, you'll need to start a collection of 'People who sing Gord songs'. It's an addiction, and you have a long way to go before you're cured.
Cathy
http://www.cathycowette.com
And don't forget autographed pictures. You need to collect those too, and promotional posters, and singles, and then you need to buy a D-18 vintage guitar, followed by a D18, GL, and a Gibson B-45 12 string..... You've only just begun.