In the Hebrew Scriptures there is no word for "spiritual." And Jesus never used the phrase "spiritual life." Because for Jesus and his tradition, all of life is spiritual.
If you're a science person you'll love (especially physics). If not, I'm sure you'll get some stuff out of it. Unlike everything else I've posted, you can't just watch this for free. You can order the DVD, download it, or even buy a "ticket" to watch it once (only dollar). It's well worth it and you support the people that produce video's like this.