yea, it's a brilliant game...and there are 16 colossi to beat, so you get an extra 4 for your money
there are tons of little tricks too, like hanging off the side of agroe, getting him to take off lone ranger style (rear up and bolt), diving into water, and grabbing on to birds and lizards, etc...
not the longest game ever, but seems like something I would go back and play every few years just for the coolness factor.