Artistic coexistence

A show of holographic art at the Clock Tower has been extended, and it's worth a look. Interference: Coexistence, put on by the Center for Holographic Arts, takes good advantage of the space (the vault in the building's basement, for example) and offers dazzling visions of a wide variety -- portraits leering and shifting as you peer closer, mountains that advance and recede depending on where you stand. Very, very cool.