StarTrek.com has finally revealed the secret behind the Klingons' cloaking device technology, as well as the Federation's vaunted transporters--a good cup o' joe. You can buy a pair of thermo-sensitive mugs that mimic these two iconic sci-fi effects whenever you fill them with a sufficiently hot beverage. The Klingon Bird of Prey will disappear, translating its caption into the English script of "Death Before Dishonor." Meanwhile, the Transporter Mug will simply dematerialize Kirk, Spock, and McCoy (who is probably none too keen on the process) in reaction to your steaming dose of java. No word yet on a Next Generation version that reacts exclusively to Earl Grey, or a DS9 incarnation that's partial to raktajino.