One of the earlier stories ever submitted:

https://news.ycombinator.com/item?id=348315

Here are a few more:

https://news.ycombinator.com/item?id=407443

https://news.ycombinator.com/item?id=818955

https://news.ycombinator.com/item?id=1814047

https://news.ycombinator.com/item?id=2211093

https://news.ycombinator.com/item?id=2211358

https://news.ycombinator.com/item?id=3711451

https://news.ycombinator.com/item?id=4671783

https://news.ycombinator.com/item?id=5837876

https://news.ycombinator.com/item?id=5837886

(Including, I admit, one from me)

Interestingly, none have generated interesting discussion.

There's also "Near-Field Authentication over Avian Carrier"

https://news.ycombinator.com/item?id=4422155

But that's something entirely different.