If you didn't play them because you thought they were for 6 year olds then I feel sorry for you... They both are quite challenging games and the visuals were stunning. If you see them around cheaply you should really give them a go! Infact I might play through them again inspired by this latest update.
Here's the IGN Pikmin 1 Review: http://au.cube.ign.com/articles/166/166510p1.html and the Pikmin 2 Review: http://au.cube.ign.com/articles/540/540864p1.html .
Yeah I like skiing to Ekiushi, though I rarely get an oppurtunity to do it.