@Wyku...
If you liked the first pikmin, then you should buy Pikmin 2 when it releases. It improved on every aspect of the game. The time limit is gone, there is a lot more things to collect, two new types of pikmin, caves, multiplayer-- both co-op and battle, 'challenge' levels. Also, caves and the multiplayer levels are randomly generated, so while the levels will be similair when you replay them-- the layout of the levels are slightly different every time you play it.
I own both and have played through both many times-- but compared to pikmin 2, pikmin just feels like a well made tech demo.
I recommend that people pass on the first game and wait for the second game to be released-- it is the far superior game. IF they add online support, I will actually buy it again even though I still have my copy of pikmin 2.
Also-- everybody should pick up Pikmin 3 when it comes out-- this is a great, and unique, series.