We share a lot of the same picks from 2005 (Nevermore, Immolation, Bolt Thrower, Nile). It was a very strong year. I'd have to add Akercocke: Words That Go Unspoken, Deeds That Go Undone. If you haven't heard that album, check it out! I'd also include Arcturus: Sideshow Symphonies.
great top 10! mine goes like this 10 Rammstein Rosenrot 9 PAIN Dancing with the dead 8 Kreator Enemy of God 7 Dark Tranquility character 6 Exodus Shovel Headed Kill Machine 5 Trivium Ascendancy 4 Nile Annihilation of the Wicked 3 Opeth Ghost Reveries 2 Strapping Young Lad Alien 1 Hypocrisy Virus Nice to see that some of our picks are overlapping! I think the overlapped picks deserve to be on everyone's top 10 metal albums from 2005 who's into metal!