Great thread!
Meddle is my favorite album. There's not a moment of filler, the music is phenomenal, and the shifting moods and sensations of the songs are some of the most poignant and definitive in all of rock n' roll. They are a fucking incredible band (the best, in my opinion).
For me, the albums (best to worst) go like this:
Meddle
The Wall (I know some find this album pretentious, but it's fucking incredible music)
Animals
Wish You Were Here
Dark Side of the Moon
The Division Bell
A Momentary Lapse of Reason
Obscured By Clouds
Ummagumma
More
Atom Heart Mother
Saucerful of Secrets
The Piper At the Gates of Dawn
I consider The Final Cut just a Waters solo album with Gilmour on guitar. That said, I think it's a fucking phenomenal album. The lyrics and melodies are heartbreaking.
I own the Live in Pompeii dvd, as we all a few other Floyd things (VH1 Classic Albums dvd, Pink Floyd: 60s era England dvd, Pulse dvd...). Also, the Roger Waters Live dvds are spectacular (The Wall: Live in Berlin, and the In the Flesh Tour).