U2's most successful album (their first No. 1 album and the 1987 Grammy award-winner for Album of the Year) is also their most dour. From the stark, black and white cover photography, with U2 looking like missionaries (or at least M*A*S*H extras), to the existential angst at the heart of each track, The Joshua Tree is one long, atmospheric wail at the abyss. Producers Brian Eno and Daniel Lanois turn in an austere production that heightens the drama substantially.