These are my favourite demoscene productions from the year 2009.
You can also watch this playlist on YouTube:
http://www.youtube.com/TheDemoTube#p/c/5E0B954842E42356
Missing productions:
Three fourth / Dimness
Clouds Dream 4k intro by FRequency
Koneko by bitFlavour
The Death Grind hd (720p) - short film
Spilled by Archee: fluid simulation in a 4Kb program
Assembly Summer 2009 - Invtro
Headcrash & ADDiCT - Bloom 2
Stationary Elvin Stands Still
Breakpoint 2009: Howto convert Ping-Pong to Demo
