How about a post on technical death metal? I have only fairly recently become familiar/into this sub-genre, but it is very listenable unlike some death metal and also very intriguing (to me at least).
I credit my introduction to Death's latter 3 albums, and in particular Symbolic, and Cynic who would become more progressive/fusion death metal, but their first albums Focus has the seedlings of technical death metal. Then there is Atheist - Unquestionable Presence which might have been the album to push me into this sub-g. There is of course Edge of Sanity - Crimson (Swedes before the MDM explosion; one 40 something minute track of progressive/technical death metal).
So that wraps up the intro to classic albums that started it off. However, current TDM seems to have flourished into something of its own. I will give a list of bands I am currently delving into and which albums I think are some of the best intros. (bandcamp links so you can check them out of even buy if you like).Glorification of a Myth by Ouroboros
(these Aussies have it down pat and this may have been the modern album that got me thinking. The riffs are non-stop!)Fragments of Form and Function by Allegaeon
(checkout The God Particle)The Path of Apotheosis by Inferi
(I like this because it is technical death metal with some obvious MDM influences; check out Destroyer)The Flesh Prevails by Fallujah
(checkout Starlit Path)Neurotripsicks by GOROD
(a little closer to regular death metal, but still gets a nod as it maintains some serious technicality)Akróasis by Obscura
(they have one of the coolest fretless bassist; check out any of it, but maybe the title track)The Aura - Beyond Creation
(check out Omnipresent Perception)Epitaph by Necrophagist
(this is probably the most celebrated, I think these guys put out only this album and everyone has been waiting since; checkout Stabwound, also THIS MIGHT BE THE PLACE TO START LISTENING)