Helter Skelter was the club night that had several venues throughout much of the late 80s up until the end of the 90s. There were several PHM era shows at Helter Skelter which took place at the Stardust Ball. By 1994, Helter had moved to the Probe, where NIN played a warm up show.
Trent used to go hang out at Helter Skelter during the recording of the Downward Spiral. Not often, but on several occasions.