Carnut gives some good tips.
Here are a few of mine, they will not appeal to all Old School lovers
Airbourne - Running Wild
Great AC/DC influenced band. They sound like the 70s AC/DC with a shit load of energy added. I love this!
Arsis - We Are Nightmare
This could be my number one for 2008. Technical death metal with great songs and lots of melody added. I play this album every day.
Bonded By Blood - Feed The Beast
Old school thrash Exodus style. Witch is among the best thrash styles ever if you ask me. It will grow on you.
Grand Magnus - Iron Will
Old school and melodic. Grabs you the first time you hear it.
Into Eternity - The Incurable Tragedy
Soon to be released. Very good concept album (again) by this Canadian death-metal band.
John 5 - Requiem
Great shred album!
Kataklysm - Prevail
Great death metal album. Not as aggressive as their previous album
Krisiun - Southern Storm
Brazilian death-metal. Great album. Would love to see them live.
Opeth - Watershed
Nuff said.
Origin - Antithesis
Another great technical death-metal album.
Very intricate riffing. The vocals could have been better.
Soulfly - Conquer
I surprised myself by liking this album.
Will see them live at the Loud From The South festival right here in Eindhoven.
Vader - XXV
An excellent overview of their now 25 old career. Some unreleased tracks, some re-recorded and remixed tracks.
Vader simply rules.
Warrel Dane - Praises To The War Machine
Most people here know that Nevermore is my favorite band. But this is not Nevermore, it still is damn great! It needs some time but it will sink in. One of the best albums of this year and higly recommended to anyone who likes metal and likes the vocals of Warrel.