The link provided is to Jamie Monger's (writer for AMG) top 20 picks. Jamie has introduced me to a lot of music over the years and I respect his choices and know it must have been damned hard coming up with just 20.
I realize that on any given day your top 5 could change so don't feel "fixed" to the list you provide. I also realize that you may have your top 5 jazz, top 5 trip hop, top 5.... whatever.
I know it's somewhat of a BS premise but still, can you think of 5 albums that stick with you? 5 albums that have informed your taste in music, 5 that you measure all else against? 5 that have changed you?