could be trickey... if its a very hard challenge then as ionsurge says... "there are clear winners already"... and the vast majority of the codingforums.com community wouldnt be able to have a bash too... but then again... if its easy your gonna have 50 poeple all claiming that they should have the book... and listing extra features of their script that makes it elite...
so my thoughts would be more towards what everyone could have a go at... and seeming as everyone is here about some aspect of web design... why not a design perhaps? at least then 50% of the forumites are talented enough to take part. although once one person has done it then everyone will then be doing the same with some little extra features. p'raps a redesign of the famous javascriptkit... but then again that site still looks fine...
there we go... i just emptyed my thoughts into a textbox... such fun...