Immaculate Collection

Covering the period between her 1983 major debut single Holiday and 1990's Vogue, The Immaculate Collection is Madonna's first and best greatest hits album. It doesn't include all of her singles from this period, missing the number one hits True Blue and Who's That Girl as well as Angel, Dress You Up, Gambler, Causing A Commotion, The Look Of Love, Dear Jessie and Hanky Panky it does include all of her most well known tracks as well as two new tracks the sexual Justify My Love and Rescue Me.
All of the hits here appear in a slightly remixed form although none of them detract from the songs themselves and the remix version of Like A Prayer is absolutely fantastic.
The album starts off with Holiday and runs in chronological order through her 80s hit and while a lot of the early ones could be described as little more than throw-away pop songs tracks like Live To Tell, Like A Prayer and Vogue are classics which would be hits regardless of what decade they were released in.
If you only own one Madonna album from the 80's make it this one. You get all of the hits and none of the filler of her 80's albums.

One of the biggest selling albums ever in the UK and rightly so.
It's not quite perfect, the rather out of place remix of Like A Prayer would've have been better replaced with the original, but that aside, an ALMOST perfect example of Madonna at her best.
Pure unadulterated pop. Before she started taking herself too seriously.