@pleonasm - I just watched that clip on YouTube and they got something else wrong. Flowering teas take much longer than that to unfurl. When I bought some (including a special glass teapot so I could watch it properly) it took about three or four minutes to finish blooming into shape.
I guess this is actually a good thing, as it helps you to know when the tea is ready to drink. But it doesn't look as dramatic in real life as they make it look on TV and movies.
It is still beautiful though.