Well, tuning the drums and the player is 80% of the sound. Past that, get really good at mic placement and compression... compression both to bring out the transient and kill the decay as well as smash the transient for fattening... I often run two compressors in a row... The first kills the sustain and makes the transient stick out. The next one then smashes the attack... so you get just the drum's attack and get it smushed for fatness. Though, some genres (blue grass, some jazz) I don't do a thing and just mic the kit really well, even if it takes half a day to get the sound just right.