The only commonly sold "herbal high" that has any psychoactive effects whatsoever is Salvia divinorum, and it's nothing like pot at all -- from what I hear it can produce some pretty intense psychedelic trips but all I've gotten off it is some odd physical sensations that lasted a couple of minutes. The rest are all bullshit. Think about it, if there was a plant that looked, tasted and worked like marijuana, why would they allow it to be legal?