Here are some other cool, exotic scales. Many of these scales are known under many different names and sometimes there are multiple scales referred to one name.
Algerian Scale ... this scale is used in music from the Middle East, also known as the Byzantine Scale.
Arabic Scale ... this scale is used in Arabic music are one of two scales often referred to "Arabic".
Byzantine Scale ... An exotic sounding scale also known as Double Harmonic.
Chinese Scale ... learning this scale is a great introduction to Chinese music.
Diminished Scale ... a octatonic scale.
Egyptian Scale ... one of the scales that sometimes are being referred to this name.
Eight Tone Spanish ... suited for Spanish music and Jewish music.
Enigmatic Scale ... a somewhat obscured scale invented by Giuseppe Verdi.
Geez Scale ... a scale with Ethiopian roots.
Hindu Scale ... a scale suitable for improvising in Indian music style.
Hirajoshi ... Japanese pentantonic scale.
Hungarian Scale ... comparable with the Harmonic minor and is often used in Indian classical music.
Japanese Scale ... also called "In Sen scale" and are built like a pentatonic scale.
Oriental Scale ... a scale coomon in Chinese music.
Romanian Minor Scale ... from Eastern Europe and great for improvising in a melancholy mood with a twist of traditional folk music.
Spanish Gypsy Scale ... correctly known as Phrygian dominant scale, but is often called Spanish Gypsy because of its flavor of flamenco and South East Europe.
Maqam ... maqams are groups of modes often played with Middle Eastern instruments.