I saw reactor 4 building explode on live TV and immediately fled the city. If the winds hadn't blown out all that radioactive material to the ocean (where US sailors actually got radiation poisoning on a ship east of Fukushima) but had instead blown it south, Japan's economy would have totally collapsed.
It was a very bizarre feeling when I finally managed to get to Tokyo and everything was so...normal. I'd been trapped in Fukushima for eight days with minimal food and water at that point. Lost eight pounds. Worried constantly about radiation. Had no clean clothes. What would normally have been a two hour bullet train ride from there to Tokyo ended up taking two days as the route south was still closed when a path to the west opened up.
Then eventually I got to Tokyo, feeling like a haggard refugee, and everyone was going about their lives as normal. Very surreal.