Lots of great choices already. Here are some albums that I consider perfect. These are not in any order.
Led Zeppelin
The Cars
Joshua Tree
Who's Next
The Dark Side of the Moon
Boston
Wolfgang Amadeus Phoenix
Honorable mention:
Aja - Jazzy might not be everyone's thing.
Let it Be - The Replacements. Gary's Got a Boner isn't great.
War by U2 - Really solid and underappreciated.