Another old favorite. Much discussion from 8 and 22 months ago:

http://news.ycombinator.com/item?id=1218951 <- 31 comments

http://news.ycombinator.com/item?id=478632 <- 56 comments

Discussions from earlier submissions are also interesting:

http://news.ycombinator.com/item?id=1218951 <- 31 comments

http://news.ycombinator.com/item?id=478632 <- 56 comments

Further, I hope JoshTriplett (http://news.ycombinator.com/user?id=JoshTriplett) isn't too disappointed that when he submitted this exact same item 2 days ago it got one upvote and no discussion. In submitting to HN, as with comedy, timing is everything. http://news.ycombinator.com/item?id=3784912