The Michael Jackson shop in Shibuya...
Michael's handprint at Tower Records Shibuya...
And the Michael section on the same floor of Tower...
Small unit in a shopping market selling only MJ merch and artefacts...
Couple of other things I've remembered too. A small shop in Harajuku had a display of all little MJ models in their shop, they weren't for sale and there were signs saying not to take pictures.
Also in addition to Thriller playing everywhere at Universal Studios they have a ride called Hollywood Dream. It's a rollercoaster where each rider chooses their own soundtrack which is pumped through speakers on the rider's seat. There are only 5 tracks to choose from, no prizes for guessing which song I chose...