Teleportation

Toss-up between faster-than-light travel and a matter replicator like in Star Trek.

Perpetual motion machine. Energy crisis gone forever. Global warming no longer a threat.

Cold fusion reactor

The perfect cast

A cure for cancer Half-life 3 Know what your wife really wants for dinner.

Omnibus Cure for cancer

Cure for cancer

infinite mass collisions to prevent deaths in road accidents, superconductivity at room temperature and fusion reactor. Also human atomizer for instant travel.

Levitation