Hmm been buying and playing games along as I can remember haven't gotten to many limited or collection editions as i'm getting into buying them more lately. I would say I do have some rare titles in my collection for a Australian collector. I collect for N64, Gamecube, PC , PS3 and some old games for the NES. Currently I own 14 different gaming platforms.
Recent purchases from this year included Yakuza 4 Shiro edition (JB-hifi Preorder), Duke Nukem Balls of Steel (GAME preorder), Record of the Agarest war Zero (US), Legend of Zelda: OoT 3D Ocarina Edition,Deus Machina Demonbane, D.C. ~ Da Capo Limited Edition, RIFT Collectors Edition (Digital preorder Steam), Heroes of might and magic VI Deluxe Edition (Steam Preorder), World of Warcraft Cataclysm collectors Edition. Also have Arcana Heart 3 Fan oppai edition and Cathrine "Love is over" on order.
I also saw a The Legend of Zelda: Skyward Sword Limited Edition - hxxp://www.ebgames.com.au/wii-154311-The-Legend-of-Zelda-Skyward-Sword-Limited-Edition-Nintendo-Wii. Not sure if you are allowed to link URLs.
Uploaded some photos so you can take a look (not the best quality). Few items and consoles are missing any questions just ask =]
http://photobucket.com/SenpaiCollection