I enjoy Kraftwerk a lot, especially the TEE/Man Machine & Computer World albums.
Also, there's GLWZBLL, sadly he stopped to make music but it's great stuff.http://glwzbll.bandcamp.com/
Classicalfag here. Bach will always be my favorite, I think. The more I look at it, listen to it, play it, the more there is. Just when I think I've found everything, something else pops up. It's music that I can get completely lost in, and music that makes the silence that follows it poignant. I don't want to speak after the piece is finished. I don't even want to start another piece, or the same one over again. I just want to contemplate in silence, and that to me is the mark of wonderful music.
When I was younger I really used to like the Beatles, we had a VHS of the animated Yellow Submarine movie? I watched that shit so much as a kid that the tape wore out. I kind of grew out of the Beatles and classic rock as a whole. Tomorrow though, I might be going to a concert with a ton of local Beatles cover bands, assuming it doesn't rain. Should be pretty good, hopefully.
As for my actual favorite band, I don't have one. I listen to a lot of different bands and musicians that it'd be hard to single one out.
Since late 2011 or around that time, my favourite has been Sopor Aeternus. Although I haven't really listened to much of it in a while, I still keep coming back to her stuff whenever I'm in the mood for some dark and sad music.
Fortunately, she just reissued both D.L.S. albums (her absolute best works, in my opinion) on vinyl, so I've been listening to some of her mid-late 90s stuff to get back into that kind of music. Her more recent material is okay, compared to the old stuff, but that's a matter of preference, I guess.