Hmm, a few choices from me, then:
Acid Horse,
No Name No Slogan - an absolutely stomping house tune (I don't normally like house, but this is really great, old house) that resulted from a one-off collaboration between Ministry and Cabaret Voltaire in '89 or '90, with wonderfully detached vocals from Stephen Mallinder and a great guitar solo on the outro. Bet this is on the only track mentioned on here with a guitar solo (let alone a
great one

).
Stakker,
Eurotechno - OK, so it's divided into 21 'segments', but they're all far too short to include as individual pieces. The holy grail of acid weebly-wurbliness.
Autechre,
Lowride - penultimate track on
Incunabula. This tune always puts me in mind of vertiginous cosmic vistas filled with bizarre non-Euclidean geometry far beyond the ken of mortals (&c. &c. &c.). If you know what I mean.
Ron Grainer/Delia Derbyshire -
Doctor Who Theme - can't not include this, if we're doing 'Lovecraft-tronica'.
The White Noise -
The Visitations/The Black Mass - more Radiophonic Workshop gorgeousness/horror. The whole second side of their
Electric Storm LP. Awesome stuff.
Also really, really like Aphex Twin's
We Have Arrived remixes, most of the first
Prodigy album, the whole of FSOL's
Dead Cities, Front 242's
Work 242 mixes and
Welcome To Paradise, Portion Control's
Theme From Onion Jack, looaads of Kraftwerk, but especially
Trans-Europe Express/Metal On Metal and
Neon Lights, gotta include
Blue Monday I suppose, and so on and so on and so on...