Here's some stuff you might want to check out. More Electronic Music than pure "Techno".
The Crystal Method - Vegas
Hallucinogen - The Lone Deranger
Paul Van Dyk - Seven Ways
Daft Punk - Da Funk
Aphex Twin - Selected Ambient Works Vol I
Hallucinogen - Twisted
These albums should get you off to a decent start if you want soundtrack-style music. If you want a good foundation of Electronic Music in general, try the following:
The Orb - UFOrb
Kraftwerk - Computer World
Brian Eno - Music for Airports
Global Communication - 76:14
KLF - Chill Out