When I was first getting into guitar, Moving Pictures was new and pretty popular. I remember being astounded by how much Lifeson's solos were different from other popular rock music at the time. He led me to really embrace solos that were less flash and more melodic ambiance. I think his playing really influenced me. Some of his note choices led me to more outside jazz solos when I got to college...which are things I might never have learned to appreciate without his whack choices. I also learned to play in 7/8 from him, and garnered a great appreciation of how time signatures can impact the feel of a song. Sure, I could have learned that stuff from anyone, but Rush was my first exposure.
No shit on that one, either.

I remember hearing Limelight come on the radio for the first time. I think I had a Def Leppard poster on the wall as a matter of fact, and an 8-track stereo in my room with a FM radio on it and 2 cheap-ass "13 year old Christmas Present" speakers hooked to it......
And then it started. And it changed me.
I actually remember listening to it, and thinking....that drummer sucks, it kind of just sounds "sloppy". And I started to listen closer and thought "Who does this guy think he is, Robert Plant? He sucks!"
And this guitar,,,,,what the fuck is this guy doing?
He's soloing over empty air? No one does that. I'm not sure you're allowed to do that.
And then I started air drumming along, and I couldn't do it.
I started trying to follow what was going on, and I couldn't do it.
But they could.
And I was hooked.