The main challenge associated with processing of bulk metallic glass (BMG) is a consequence of their metastable nature: fast cooling conditions are required to avoid crystallization during processing. This limits the range of geometries that can be cast since filling of the mold and fast cooling (which require opposite ideal conditions) must be carried out simultaneously. As an alternative to casting, BMGs can be thermoplastically formed (TPF) in their supercooled liquid region, where the required fast cooling to vitrify the BMG is decoupled from the mold filling operation. This is made possible by the unique crystallization behavior of BMGs which results in a supercooled liquid region. When an amorphous BMG sample is heated into the supercooled liquid region, the BMG first relaxes into a readily deformable supercooled liquid before it eventually crystallizes. A wide range of processing methods based on TPF have been recently developed in our lab that exploit the unique softening of some BMGs in the supercooled liquid region.