There are all the hilarious leaks and blocks.

Pakistan blocks youtube and the announcement leaks internet-wide.
Turk telecom (AS9121 IIRC) leaks a full table out one of their providers.  

So many routing level incidents they're probably not even interesting any more,  I suppose.

The huge power outages in the US northeast in 2003 (https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.183.998&rep=rep1&type=pdf) were pretty decent.



On Tue, Feb 16, 2021 at 4:02 PM Damian Menscher via NANOG <nanog@nanog.org> wrote:
https://en.wikipedia.org/wiki/SQL_Slammer was interesting in that it was an application-layer issue that affected the network layer.

Damian

On Tue, Feb 16, 2021 at 11:37 AM John Kristoff <jtk@dataplane.org> wrote:
Friends,

I'd like to start a thread about the most famous and widespread Internet
operational issues, outages or implementation incompatibilities you
have seen.

Which examples would make up your top three?

To get things started, I'd suggest the AS 7007 event is perhaps  the
most notorious and likely to top many lists including mine.  So if
that is one for you I'm asking for just two more.

I'm particularly interested in this as the first step in developing a
future NANOG session.  I'd be particularly interested in any issues
that also identify key individuals that might still be around and
interested in participating in a retrospective.  I already have someone
that is willing to talk about AS 7007, which shouldn't be hard to guess
who.

Thanks in advance for your suggestions,

John