Here are two video clips on the Knicks defense in their home opener. Both show the Knicks switching on every pick. The first one is of the technique working, as Miami struggles to find an open man. The other is two possessions showing different ways the Heat took advantage of this strategy.
[Note: There's no audio on these clips for those at work. I'd like to say that's by design, but as you can see I'm no Gian.]