Hah, I found that video on the web yesterday, decided to watch it, searched for it on my computer, and found it in even better quality. Didn't watch it though, am saving it for today when I have company.
To me the notion of being puritan-spiritual (that is, going on a "pure" diet and not doing any drugs of any kind) seems either/and silly and glorious. Having said that, I think that the glory part (honourable, maybe?) would be more appliable if you do it from the start, and that train has already sailed long ago. Otherwise, hallucinogens (together with thc) make a great tool for paving the way, letting you meditate freely down the highway for as long as you have the nerve/patience to actually do it.
Hallucinogens to me seem like a great tool for personal and spiritual freedom (from ego, I suppose, even though during my last couple of trips the ego has really, really, rooted itself, crying out in pain that "You"'d be losing all your friends, family, girlfriend, again, even though I know that's poppycock) as long as you take them with spiritual, exploratory intent. I look at my (I would like to say fellow heads, but I'm not sure I can muster it...) //// rave scene here in Sweden and it only produces a gasp of exasperation: people come to the scene, they take drugs (mostly LSD/MDMA, when it comes to hallucinogens at least) to get into the scene and dance the night away. They go home, find purpose, take more drugs, make purpose--electronic music is huge, for example--to take more drugs, come back to the rave scene to spread their music while taking drugs, then going home to keep taking drugs in order to produce more to spread (in order to take more drugs).
For most of them (not all, I've met some very neat Universal people) it just seems like a vicious circle. Personally, I've already grown tired of watching the same film on acid over and over again (even so, given the opportunity I would probably take it, depending on mood/set/setting) but I can't deny that it has lead me on a personal path towards spiritual freedom and empowerent. Right now, though, I'm squiggling my hands trying to get some money in order to grow mushrooms again (THAT's where the action lies, McKenna has convinved me .. -.-" ) and/or extract DMT (probably in a farther away future).
But even so, if I get my mushrooms, what then? Sure, I might be able to get the full-on hallucinations that I've been looking for "so long", and hopefully it'll help me set the path towards the next goal in my personal life, even though I already have several (education, music, art, knowledge). Compared to LSD (or LSA, actually..), I think psilocybes would make a far better plant spirit ally, as it actually speaks to you. LSA does too, in a way, but I still think it's just one of my own voices, compared to the voice of psilocybes. DMT? well, I just don't know yet.
If you're in for plant hallucinogens, go large. I've found that to really break through on, say, HBW, you need to up the dose. When in doubt, double the dose!