Playing Psychonauts is a fantastic experience, it is filled to the brim with weird and funny things and quotes. The gameplay is great, and the more you get into the game, the better it gets. The story is really one of a kind, and one I will never forget.
To every decent gamer out there: If you haven't got this on disc, then you need it on GOG, that's an order!
(Btw As one of the few, Yahtzee liked it, what's more to say?)