Ethiopian Yirgacheffe, from a co-op south of Yirgacheffe proper called Halo Bariti.
Bought a half pound already roasted and a pound to roast myself--comparing the flavors they bring out. Happy Mug's has much more strong dried blueberry. I use a popcorn popper yet I've managed to roast out decent flavors; raisin with a side of blueberry ain't so bad.
I just got a Chemex. Love the thing. Using the bleached square Chemex filters. I also use an Aeropress. A lot.
Our club has a Bonavita BV1900TS as well, which we use on occasion.