I've often been listening to a tune where some effect comes in and I'd be clueless about which effect was used and how - then later either figure it out or come across something on the internet that spelled it out. For example, there's a Hendrix moment on Machine Gun where he gets this pulsating feedback - it just recently dawned on me that thats the Univibe making it pulse. Most know that the Purple Haze solo depends on an octave fuzz. I was recently listening to that Saliva tune that welcomes you to the show and it has some effect that I'm guessing is a ring modulator prominently featured - I don't know for sure. I thought it might be useful to start a thread that lists interesting effects featured in specific tunes and decodes the effects used to get there.