I just watched Post Blue three times in a row, because it is just that awesome.

It's utterly the Tam siblings (from Firefly/Serenity) inextricably intertwined. Every word is Simon's devotion to River, and the imagery receives that and filters it through River's perception.  The music has just enough anxiety to express what it's like to be them, and the effects and cuts in the vid enhance that feeling and the discordance of living in River Tam's brain.

The announcement (see link above) has a BIG GLARING WARNING (her words) about the crazy space incest.  Personally, in spite of the line "in the special way we fuck" and the in-bed hugging, I don't see it.  I don't see it in spite of the protective embrace while she's naked.  I probably wouldn't see any sexing going on there unless porn shots were slipped in.  However, your mileage may vary, so exercise prudence.

I'm going to go watch it again....