I think I bought the first Pikmin at some independent game store, that has been out of business for quite some time now.
Then I bought Pikmin 2 at Walmart, near its launch day. By then I realized that Pikmin is incredible, so I didn't hesitate buying it.
Seriously, if I get any minuscule bit of news for Pikmin 3, I will do the following:
1. Lug my smallish TV into my room, set it on my desk
2. Hook up my gamecube
3. Find Pikmin 2
5. Five steps because I have OCD.
But wait, why not do that now? It is Pikmin after all!