Turn your portable telephony nostalgia up to 11 and join us on a journey down Nokia memory lane. Nokia Conversations have filmed a collection of 100 phones charting the progression through the last 20 years of the Finnish manufacturer's history. Sadly, this Nokia retrospective doesn't stretch so far back as to include galoshes and bike tires, but you can still spend an inordinate amount of time trying to identify handsets just from their profile. We advise caution: this video features some seriously happy people, and our diligent research has failed to determine a cause for this dysfunction. Faux warnings out of the way, read on for the full video.