South african fermented herb crushed into a powder called "kanna" a google search for Kanna herb and a link to drugs forum has a great deal of info on it, its avail @ the local headshop and 100 % legal. Can be Smoked, snorted, chewed in gum or made into tea, various doseageages for different routes of administration, 100 mg snorted will have you up and goin like u had 12 redbulls in like 2 mins whereas the same ammount smoked will put me on my arse esp if mixed with weed. But yer that has to be my favourite legal to date and ive been thru a good deal of them shittyist would have to have been damiana...fucking foul.
On a side note i must say that Macca powder (peruvian ginseng) although not a majour stim, certainly is a good pick me up and an awesome whole food!!