I used to collect shirts when I was younger, now I just buy Kingstonian shirts & one's that look funky... 75% of my stuff is at where I used to live in Devon so I'll just note down the ones I definately remember having:
Kingstonian, home - 2000/2001
Kingstonian, home - 2009/2010
Kingstonian, away - 2003/2004 (currently bidding for on ebay)
St. Etienne, home - dunno the season, kind of recent... I'm also wearing this right now lol...
Fenerbache, away - dunno the season I think it's 07/08 or 08/09 (white with yellow hoops)
Republic of Ireland, home - world cup 2002
Republic of Ireland, training - world cup 2002
Manchester United, home - 2007/2008 with Paddy #3 printed on the back & CL arm logo's
Manchester United, GK - 1997/1998 (the trippy black & green one)
Brazil, home - 2005/2006
Holland, home - 2005/2006
Barcelona, home - quite old... I think it's one from when Mark Hughes was there
Newcastle Unietd - I think this one is 1995ish
England, GK - dunno the year possibly 1997ish... it's the black one with light blue lightning-esque stripes down it
Leeds United, away - early 90's... blue & yellow stripes, this shirt is waaay to small for me now lol
PSV Eindhoven, home - 2007ish
there's more but i cant quite remeber them right now.