what's going on!

just came across this pic on Straits Times Interactive, which showed Genting International's artist impression of the Marina Integrated Resort... with "two towers shaped to look like double helixes"... i remb reading not too long ago about how they are gonna try to build this world-class bridge at the Marina, also with some double-helix exterior or something.... so weird. what's with having all these life-size double helix structures... is there a recent architectural obsession with it or something? or has it always been popular and i've just not been aware of it? or am i being too impressionistic and hav just 'extrapolated' a single urban devt project in sg to the entire world? =P