Those movies are more than two years old and thus do NOT reflect Boson's cirrent state.
The screenshots give a better idea of Boson's current look.

You can download the Boson-movies here.
They are rendered completely in Boson, except for intro/outro sequences
They do not show actual gameplay, as scripts were used to make them, but the game itself looks very similar.

The movies come in three different flavors:

• High quality - has 800x600 resolution and best quality, but is also quite big and requires decent computer to play. Recommended for users with fast internet connections.
• Medium quality - resolution is 640x480, but it doesn't look much worse than high quality one.
• Low quality - with 320x240 resolution, quality isn't the best, but it's good for modem users and for previewing before downloading the high-quality version.

This is the first movie
It's lenght is 1:39 and it consists of two scenes. First scene shows an attack on enemy's base in desert and second one shows deadly Transall bomber blowing up another little base.
It's rendered with pre-0.9 version of Boson from the CVS and released on 15th September 2003.
Select one of three versions to download:

• Download high-quality version (40878 KB)
• Download medium-quality version (26179 KB)
• Download low-quality version (6578 KB)

This is the second movie
Lenght is 2:56. It shows a big attack to the enemy's base with tens of fighting units (nice big war ;-)).
It's rendered with pre-0.9 version of Boson from the CVS and released on 15th September 2003.
Select one of three versions to download:

• Download high-quality version (82613 KB)
• Download medium-quality version (52893 KB)
• Download low-quality version (13283 KB)