Also, this. There's been a buzz on the internet for the last couple years about tcds. I've thought it was interesting but never really looked into it. Apparently, when current is flowing from the crown of the head to the cheek (anodal in the experiment's parlance,) they saw a 4% increase in learning times, and the effect lasted for hours. I'd be willing to bet that under more finely tuned conditions the effect could be amplified further.
I'll be researching more on this, for sure. It's very cheap, and safe if you're not already dangerously stupid (hey, if a little electricity is good, then if I plug this in the wall, it'll be awesome!!) *cue award ceremony, cut stage left, pan Darwin Foundation presenters.
So... s/Soylent for nutrition, healthy workouts, running or an active lifestyle, nootropics, and tcds... add in Khan Academy, maybe Rosetta Stone to work out the brain. I also want to try out this on Wikipedia articles (there's an open source version out there.) Some sort of gaming would be a good addition to the regimen. What else can we do to amp our brains?