I mainly collect the Disney Dragons and Lilo & Stitch pins but I do tend to pick up whatever takes my fancy (if I can afford it!)
My latest special two are:
The Disneyland Paris Limited Edition Lilo & Stitch train pin (LE of 900) which was released on Saturday, it just happened to be the last day of my holiday over there. I got mine from the Santa Fe hotel shop and never saw another one all day so I think they must have sold out really quickly.
And the Stitch Pin Trader 626 pin from DisneyAuctions.com, although I got mine via eBay. It hasn't arrived yet but then I only paid for it yesterday.