King Crimson: Discipline. A mixture of quirky pop which at the first listen sounds simple, but when you dig into it turns into something completely different. Nice tight package of brilliant tracks, played by extremely talented musicians. Math music you can hum in the shower. The band kind of disappointed their old fans coming from the album Red to this one. I like both albums a lot.
Talk Talk: Spirit of Eden. Pop megastars got all the studio time they wanted. Instead of creating another mega hit after The Colour of Spring, they hired tens of musicians, turned off all lights from the studio and sampled the mistakes and off-takes together creating a new genre, which was later known as post rock. You kind of sink into their world when listening to this, finding new things even after decades of listening. 20 years later Radiohead did a similar change of direction and got really popular. The record company sued Talk Talk for their album in the 80's.
Miles Davis: On the Corner. Oh how the jazz audience hated this album. Miles wanted to get the young black audience, and created a funky kraut masterpiece of an album. Cut from tape by the mighty Teo Macero, it sets a standard of sampling used by the hip hop artists a decade later. As all the other albums I mentioned here, put some good headphones on and it's crazy how you can sink into the music. Repetitive in a similar way as Discipline, but instead of looking into pop and post punk, this one takes its influence from funk, krautrock and jazz.
If you have a mind that can appreciate any of these albums, the others will tickle the same cells in your brain.