From styropyro.

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0:00 intro
3:36 building the laser
6:07 powering it up
7:35 first burning tests
9:58 melting a penny
12:11 opening a bottle
13:38 the Gillette test
15:10 welding with the laser
17:05 making a ruby
19:52 burning tungsten
21:06 burning diamonds
24:05 difficulties and failures
26:22 flammable liquids
28:07 laser vs. ice
29:25 world record comments
32:31 laser safety
33:43 opera sponsored segment