A lot has already been said about the best album openers in metal. Not that much do we talk about abum closers though.
I guess for me the ending of an album is at least as important as its start.
I have put here my favourite album closers in all metal of all time, in descending order of my preference. And I am looking forward to your comments on it.

1.Iron Maiden - Powerslave

2.Iced Earth - Burnt Offerings

3.Mercyful Fate - Melissa

4.Opeth - Morningrise

5.Slayer - Seasons In The Abyss

      View entire list ››

My favourite EPs -- well, not that many after all, I am just not too much into EPs in general.
But these few would probably qualify as my favourite ones of all time, listed in order of preference.

1.Slayer - Haunting The Chapel

2.Mercyful Fate - Mercyful Fate

3.Anathema - The Crestfallen EP

4.My Dying Bride - The Manuscript

5.Savatage - The Dungeons Are Calling

      View entire list ››

A (most probably incomplete) list of albums on which I really enjoy only a single song (in alphabetical order, excluding one-track albums).
They turn out to be albums that I rate a 6 or 7 overall -- with few exceptions.
The songs mentioned though are all-time favourites, which I would rate at 9 or 10.
I only listed albums on which I found exactly one such song.

1.Agalloch - Pale Folklore

2.Amorphis - Far From The Sun

3.Annihilator - Set The World On Fire

4.Asphyx - The Rack

5.Bathory - Blood Fire Death

      View entire list ››

Top down; full-length studio albums

1.My Dying Bride - Turn Loose The Swans

2.My Dying Bride - The Angel And The Dark River

3.My Dying Bride - Like Gods Of The Sun

4.My Dying Bride - The Light At The End Of The World

5.My Dying Bride - The Dreadful Hours

      View entire list ››

1.Estatic Fear - Somnium Obmutum

2.Theatre Of Tragedy - Theatre Of Tragedy

3.My Dying Bride - Turn Loose The Swans

4.Iron Maiden - Powerslave

5.Anathema - The Silent Enigma

      View entire list ››

An entirely subjective list of my all-time favourite metal albums, well lets better say albums/genres featured on MS, since not all here is precisely metal.
Objective quality is not a criteria here, just how much I like the album. Ordered by preference, top down.

1.Anathema - The Silent Enigma

2.Opeth - Morningrise

3.Estatic Fear - Somnium Obmutum

4.My Dying Bride - Turn Loose The Swans

5.Slayer - Seasons In The Abyss

      View entire list ››