I don't listen to full albums all that often, unless I'm going to see the band live or just getting into them. But:
Megadeth - Countdown to Extinction (for their 20th anniversary tour)
Barren Earth - The Devil's Resolve
Vektor - Outer Isolation
Barren Earth - Curse of the Red River
Symphony X - Paradise Lost (for a thread on their forum, I liked it more now than when it came out)
Ayreon - 00110101 (or however the numbers go)
How was that Ascariasis album? I didn't check out much of their other stuff yet, but I like that song Shatter.