list is alright. i truly thought dune to be one of the best novels i've read, but as to his next five in the series...a little boring and convoluted. hyperion is a great series, as is HGTTG, which in my opinion, everyone on the world should read if just for the laughs.
if i had to choose one book that should be included here though it would definitely be Alfred Bester's The Stars My Destination - nearly forgotten about now, which is unfortunate.