Slow motion video sequence of a knife bursting a water balloon

The most gorgeous high speed video sequence i have ever seen - often imitated, but never surpassed. Recorded by NASA JPL photograghers using the Photron APX high-speed video camera. Camera: ultima APX 120 KC recording at 4,000 frames per second (fps) with a 250 microsecond global shutter and a resolution of 1,024 (H) by 512 (V) 30-bit resolution.