I "found" Porcupine Tree through the Spock's Beard, Flower Kings, Dream Theater, Transatlantic, IQ (UK band), Marillion "New Progressive Rock" thing.  Though the similarities with Pink Floyd are obvious, I think Porcupine Tree is something a little bit different from all of that and very good.

+1

It took me an hour and a half to compile that!  Here's what they all are in order and I'll leave it to the observer to google them:

Phil Collins
The Police
Icehouse (band from Australia)
Harry Chapin (late folk-pop singer)
Walt Kelly's Pogo (comic strip)
Midnight Oil
Pet Shop Boys
Kraftwerk
Nausicaa of the Valley of Wind (anime movie, I really wanted to post the ending but that bit will do)
Orb
Model 500
U2 (here, the Zoo TV tour specifically)
Le Petit Prince (self-illustrated children's book)
Pizzicato Five
Fumitaka Anzai demonstrating how he recorded a BGM cue from anime Urusei Yatsura
Edan (the only YT link that's just the song with no real video)
Saint Etienne
The Hitchhiker's Guide to the Galaxy (series of books)
Daft Punk
Gorillaz (here, 19-2000 from the first album, believe it or not, I like the newer stuff less)
Rilo Kiley (here, playing a song they used to play a lot when I would go see them around 2001. Climax is around 3min.)
Porcupine Tree
Perfume (Japanese sister group)

There are a lot of things I cut out over the course of that hour, and if I felt like spending another hour at it I'd take out a lot of the vocal stuff and substitute more instrumental (I can't believe I left out YMO) and since the OP said "non-chip influences" all the VGM stuff I could name was not considered.

crunkstep

I lol'd at this.

There were some links, but youtube is a pain.

I thought I had answered this one already, and for many, some of these answers will be obvious:

no idea how i forgot to put these two in my other post

the velvet underground
operation re-information

This post is amazing.

This horse is amazing.

This man is amazing.

The Kid, Kpist, Appareil, DAF, Suicide, Joy Division, Depeche Mode, New Order, The Cure, Atom And His Package, SMK, Bad Religion, Microsurgeon, The Smiths, Get Up Kids, At The Drive-in, Prince, Cap n Jazz, Pale, 50Hz, American Football, The Beautiful People, Strip Music, Casiotone for the painfully alone,....

+ tons of bands

it's a really weird mix for me.
i focus on almost minute details of a sound.

steve reich

the locust

the daughters

converge

an albatross

dispyz

yasunori mitsuda (not just chrono trigger)

hirokazu "hip" tanaka (not just metroid)

just to name a few...

Nothing has changed the way I make music more than this interview, and the music of Citrus and Yoga'n'Ants, the projects of interviewee Emori Takeaki.

''For Citrus, as long as the “spirit” was good, it was okay. If someone randomly did a really great take, we’d throw it out. We intentionally used the bad takes. That was the nature of it.''

Although I have only just started my venture into the chipworld... I feel as though I have already developed a sound. I started out thinking I would work on a project which would be mellow, instrumental hip hop..... But what I ended up with was something quite different, quite magical indeed...

Here's what influences my music now:

MORTICIAN

(early) NAPALM DEATH

SUNN O)))

SLEEP (this album only though)

WATCH THIS SPACE! Hopefully should have some stuff recorded soon enough