I smoked some "Spice" this weekend. It's a legal herbal blend you can purchase at certain head shops around here. It costs about $100 for 3 grams. Lot of fuckin money, but worth it if you can't smoke the real shit.
I had seen the websites and heard all about it, and had my doubts, like maybe it'd be a half-assed substitute for real weed, but I was entirely mistaken. First smoke that day, I took a very modest lungful and quit. Minutes later I was HIGH AS SHIT. My friend and I were cruising to the beach and I was glad I wasn't driving because I felt like I was just flying in my seat. It was a sunny day, and colors got a little more vivid, and I had the usual increased appreciation for music. A couple hours later, the munchies kicked in bad. I swore to my friend that this "herbal blend" has some dank marijuana in it.
Here's where Spice is different, and possibly better than weed as I know it. After the beach, I had chilled out and returned about to baseline, yet I didn't have that crashed feeling that I'd get from ordinary weed. We promptly toked up once again, and it was like the first smoke all over again. Typically, smoking would give me that first "sharp" high, and anything after that would be kind of dull and lazy feeling. This time, however, it was like wake and bake all over again, with that fresh high feeling.
I've been told that the active ingredient in Spice contains a molecule that is slightly off from THC, so the brain interprets it almost exactly the same way. I suppose it will go the way of Salvia here in FL, so I'll enjoy it while it lasts.