Porcupine Tree - Even though there's no dislike, i don't get the huge praise for In Absentia/Deadwing, they're just 2 great albums out of 10, and personally.. PT has made many better albums.
I disagree on the huge love for songs like The Sound of Muzak, Blackest Eyes and Arriving Somewhere, (i agree with orcus116 that the latter sounds so stretched out), and for the others.. i think its 2 good songs, but nothing really special about them.
Radiohead - Still haven't heard Pablo Honey, but The Bends and OK Computer are easily the 2 worst albums they've made, with OK Computer being the best out of the 2.
Overall i'd say the 4 albums they've made after OK Computer beats it quite easily.
In Rainbows and Kid A would be my favorite albums made by them.
Opeth - I don't get the huge love for BWP as an album, and i don't get it for Bleak.
When i first heard The Roundhouse Tapes, Bleak was easily one of the songs that stood out the least, and even though i consider it to be great overall, i feel like people who rank it nr1 must have missed 70% of the discography or something.
Deliverance is also the best Opeth-album, having only awesome tracks.
Anathema - Newest album is the best, and anyone who says otherwise is clearly wrong.