Which songs do you think...

[jean-baptiste]

which japanese songs do you think are HUGELY famous in Japan?
songs that you could stop 30 people walking down the street and they'd all know it.
it can be any genre; j-rock, j-pop, j-hip-hop, enka, jazz, etc. from any decade. (nothing too ancient though! at least in this century and the last one. xDD)

also, don't just name a song cause you really like it.
if you have knowldge on Japanese pop-culture i'd really like your input!