In case there is any doubt about what mountain biking is about, ponder the names the manufacturers give them, knowing exactly what it takes to appeal to mountain bikers:
Cannondale Bad Habit
Cannondale Scalpel
Cannondale Trigger
Evil Bikes
Giant Thruster
GT Aggressor
GT Avalanche
GT Fury
JD Sports Destroyer
Marin Attack Trail
Rocky Mountain Slayer
Scott Voltage
StumpJumper
Terrain Destroyer
Trek Slash
Did I miss any other appropriate names?