I perceive mainstream electronic music, no, mainstream music as a whole, as essentially fad-driven. A new genre is "invented", everyone freaks out about it and it's everywhere for a year or two, then it falls out of fashion and electronic producers find another genre to champion and begin the fad cycle again. Basically, they feel the need to invent something new, a new reason to be excited, every few years in order to keep the hype machine going. In reality, this music isn't anything revolutionary at all, just a renaming or respinning or remixing of something already done. Music doesn't really occur in a vacuum, it's a constant progression of ideas, with each generation of new artists building upon the ideas of the previous one.
For this reason, I don't really pay much attention to musical movements, and instead just open my ears for whatever sounds good. Here are a few favorites that I'll never get bored of.
(Warning, a huge electronic dinosaur is approaching fast)
Tangerine Dream - Sequent C'
Kraftwerk - The Robots
DJ Shadow - Midnight in a Perfect World
Autechre - Second Bad Vilbel
Aphex Twin - Lichen
Sasha - Magnetic North
John Digweed - Knights of Columbus
Our own Renard Queenston is also an extremely talented electronic artist, if you've never listened to his works before.
I'm actually a fan of the earlier trance stuff (before it got silly) because there's a sense of progression - a sense of musically beginning at one place, and then traveling to another place. It's like taking a drive in musical form.