Japan new fan's discography

• Adolescent Sex (BMG, remastered edition includes bonus videos)    
• Obscure Alternatives (BMG, remastered edition includes "Live in Japan" EP and bonus video)
• Quiet Life (BMG, remastered edition, includes b-sides and bonus video)    
• Gentlemen Take Polaroids (Virgin, remastered edition with bonus tracks)
• Tin Drum (Virgin) - if you find the boxed version with bonus CD single you do not need to get "Exorcising Ghosts" (see below)

Compilations:

• Assemblage (BMG, remastered edition with bonus 12" mixes and videos) 
• Exorcising Ghosts (Virgin) - but don't buy if you can get the boxed version of "Tin Drum"

    
Live album:

• Oil On Canvas (Virgin) - make sure you get a CD from the 1990s or the remastered edition to get all the songs.

DVD: The Very Best of Japan (Virgin) - includes several music videos and the "Oil On Canvas" concert film.

   
Essential solo albums/collaborations to begin your collection:

• David Sylvian - Everything & Nothing (Virgin - includes the rare Japan track "Some Kind of Fool"). 
• Mick Karn - Dreams of Reason Produce Monsters (Virgin) - includes guest appearances from David and Steve. 
• The Dolphin Brothers - Catch The Fall (Virgin) - Steve and Rich's pop album, compliments Japan nicely. 
• Rain Tree Crow (Virgin) - this is the only reunion to date of all the Japan members.