If you haven't: you should.  It is easily my favorite platformer and its packed with creative dialogue, level design, and a funny concept where you play as someone who can go into people's brains and look at their personality and emotional baggage.  Some parts are confusing and weird like the Milkman and Mr. Poleylope but it's still an awesome game. 

If you have played it did you like it or was it too weird for you to enjoy?

I played it on PC but found it really difficult to play with digital controls - it was obviously designed for an analog stick of a controller. So I ditched it but I did enjoy the game.

Actually, now that you got me thinking about it, maybe I'll pick a cheap copy for my new 360...

I owned copies for the PS2 and PC and thoroughly enjoyed playing it. It's my favorite 3D-platformer after Ratchet & Clank: Up Your Arsenal

I loved it but it's not my favorite platformer, Mario still takes the crown for me.

Played it. Is amazing. Not really a problem to play on PC, gaming pads for them are pretty cheap these days.

My 5th favorite game of all time...

I heard of it. i think i'll try it out soon