Cross-posting from G+ (where you didn't mention the three big and that you didn't like them :P):
Peterson, Savinelli and Stanwell are the big ones I know off the top of my head. I think I remember seeing them from Big Ben, Poul Winslöv, Nörding, Vauen and Butz Choquin as well, and there are probably others.
A good way to find them is to search for the year ("2000" and "2004") in the pipe category on e-bay and in various online pipe stores and you're bound to find some. It's fairly easy to find from the last decade, it was harder to find for my own and a friends birth year (in the eighties), heh.
Oh and you can save the searches on e-bay to get an e-mail every time there are new matches, I'm using it on my birth year since I'm looking for a Savinelli in addition to the Stanwell I've got and it works quite well
Butz Choquin 2004: http://www.tecon-gmbh.de/product_info.php?products_id=2478
Poul Winslöv 2004: http://www.tecon-gmbh.de/product_info.php?products_id=6130
Peterson 2004: http://cupojoes.com/cgi-bin/spgm?dpt=H&srch=KW&item=petyp04s
Peterson 2000: http://www.bisgaard-pipes.com/product.asp?product=14744&vat=true&lang=bb
Stanwell 2000: http://www.bisgaard-pipes.com/product.asp?product=26682&vat=true&lang=bb
Stanwell 2000: http://www.estatebriarpipes.dk/stanwell-year-pipes.html
Savinelli 2000: http://cupojoes.com/cgi-bin/spgm?dpt=H&srch=KW&item=sav2000d
Savinelli 2000: http://cupojoes.com/cgi-bin/spgm?dpt=H&srch=KW&item=sav2000p
Savinelli 2000: http://cupojoes.com/cgi-bin/spgm?dpt=H&srch=KW&item=savc2000
Savinelli 2000: http://www.smokingpipes.com/pipes/estate/italy/moreinfo.cfm?Product_ID=77301
Savinelli 2000: http://cgi.ebay.com/SAVINELLI-PIPE-YEAR-2000-UNSMOKED-/280706417075
As you can see they're around here and there. Most of the links are from EU stores as they're what I normally use, being in the EU and all. Good luck finding something you like