Here is my list in no particular order
Ween's The Mollusk - The suburban philly duo's finest concept record. The most important band to come along in 20 years.
Oingo Boingo's Alive (double "live" studio recording) - Every song is better than the orignal album version
Rush's Hemispheres - The album that made me pick up drum sticks.
Mr Bungle's California - Brilliance. Clown music turned surf art rock..
Metallica's ...and Justice for All - Try to count out the intro to Blackened. You might need a degree from MIT. The most rhythmically complex Metallica ever. The best "prog metal" album period.
The Carpenter's Close to You - If these 20 part vocal harmonies dont move you, you must be dead, or anorexic.
John Mayer's Continuum - "go back and listen to daughters, bitches..."
Faith No More's Angel Dust - Floored their fans with this dark, twisted album. Takes about 20 listens before you'll really get it.
Beck's Midnight Vultures - "I'm gonna take you up to Glendale... take you for a real good meal." Beck must love Armenian food.
Megadeth - Rust in Peace - All their albums before this pretty much sucked. Dave Mustaine got his **** together on this one. "Thigh master.... five magics.'