This is my favourite strain. At first, it almost knocks me out. There's a warm feeling in chest and, on sunny days, everything looks brighter!
After about 10-15 minutes, I feel alert, my mood is elevated and the feeling lasts for hours. If you can get your hands on this strain, I highly recommend that you try it.
Make sure you that you get the sativa dominant Green Crack as opposed to the Indica dominant Green Crack.