I laughed more in this movie than in any other of its ilk. Mostly thanks to James Franco. Yes, the James Dean Franco. His comedic timing is startling and his sympathy is all consuming. I think the secret is that we can (Franco allows us) see the human being behind this irresistible caricature. I was totally taken by the strange kind of innocence he exudes. We sense a loyal buddy who is capable of extraordinary generosity. His smile is already an iconic movie landmark. Seth Rogen is also very funny but you can guess that this is actually his character. Nothing wrong with that but James Franco's range is infinite. David Gordon Green makes his "commercial debut" very successfully. The showdown at the end takes a bit too long but all in all this movie is throughly worth it.