The other reviews were right. This starts off really active and creative, but it slumps into sleepiness about a quarter of the way in and then mellows out.
This is the best strain I've ever smoked. Normally, I'm too paranoid to drive within about 4 or 5 hours of smoking, but when it's Silver Surfer, I could drive a fucking plane under a bridge without breaking a sweat. If you get the chance, smoke a fat bowl of this shit and you'll see where I'm coming from. By far the most purely positive pot experience I've had. This is my first and (probably) only review on Leafly. I made an account just to give this strain five stars. That's how good it is.