I've seldom seen as much disruption of the Internet as is still being caused by the Taiwan Earthquakes of 26-27 December. Six undersea cables cut at once may be a record, as may disruptions from Taiwan to Nepal.

This link has an animation of Internet routing chaos in Singapore after undersea fibers near Taiwan were cut. This doesn't actually convey much information worth a damn, but I think I lived it once, and was too screwed up to notice. Kudos to the Internet for making that possible.

Taiwan Earthquakes Boil Internet