One of the better German expressions used for vocoder intelligibility testing was "Aztekenexpresszuggsellschaft," which means "Aztec Indian train station." Or you could just be like Kraftwerk and go with "Trans Europe Express." A self-confessed "Collector of Artificial Voices," Kraftwerk's Florian Schneider also used Speak n Spell, DECTalk (used by Stephen Hawking), and the Votrax, a text-to-speech device developed by the Federal Screw Works of Troy, Mich.
#4. Kraftwerk "Computer World"