In no particular order …
The Remains of the Day
Hard to believe I found no room for Waiting for Guffman, Glengarry Glen Ross, Citizen Ruth, Rushmore, Office Space, The Limey, Short Cuts, The Sweet Hereafter, Crumb and Hoop Dreams.
Any other gross oversights? (American Beauty, for one, was an intentional oversight — probably the decade’s most overrated movie.)