There are many different brands of matcha powder out there, but I like this one made by MAEDA-EN. The basic benefit with matcha powder is the energy boost, though it also provides the same good-for-you stuff that green tea does, as matcha is a specific type of green tea which is then ground into a powder. You only use a teeny tiny bit in a smoothie, though you can (of course) make tea out of it, green tea ice cream, add it to baking, etc.
A kazillion things can be put in smoothies, and some taste great. Then again, some don’t. Matcha powder is not exactly delicious, even with the tiny amount required for a smoothie, so be sure to put in something to counteract the taste. The nutrition in matcha powder makes it worth it, though, so don’t pass this product by!