Shoegazer stuff is easily my favorite musical subgenre. Easily. It's so pretentious, fits me like a glove.
Anyway, the best shoegazer albums IMO are:
Slowdive - Souvlaki is IMO the best album to come out of the scene, period. I adore Loveless like any good human being, but Souvlaki is better. Just for a Day is slower and more meandering at times, but the times when it does go into the etheral wall of guitars, it does so with complete perfection.
Catherine Wheel - Ferment is better at the shoegazer sound, Chrome is better at fusing it with pop. I like both.
Chapterhouse - Whirlpool omg
Curve - Doppleganger is badass, as is Pubic Fruit. I liked Cuckoo but it is definitely more pop than the other two.
Ride - Nowhere is the definitive Ride album, I think Going Blank Again is just as good but that's arguable.
Swervedriver-Mezcal Head
Pavement and Lush are also pretty popular but I always thought Lush was a bit too skewed to vocals and Pavement never really did much for me.
Lesser known but also awesome albums are Drop Ninteen's Delaware-impossible to find nowadays outside of MP3 and Everything's Alright Forever/Giant Steps from the Boo Radleys.