20 oscilloscopes? Well you see I can't afford a really high end scope, so I figure that I can simulate one with a bunch of cheap scopes.
I find that if I hook up my twenty 50MHz scopes in parallel that I can divide the incoming signal among them for an effective aggregate bandwidth of 1GHZ. And since some of them are two-channel and some are four-channel scopes, if I hook them all in parallel I can get an aggregate bandwidth of more than 2.4GHz which is enough to troubleshoot WiFi routers and microwave ovens.
Or if I hook all the inputs in series I can either use them to handle higher input voltages, such as those generated by my Tesla coil, or get ultra-high resolution on very weak signals. Why I can even peer into the nanovolt signal range to monitor the heartbeats of amoebas under my microscope. Pretty cool!
Of course it's kind of awkward having a waveform split across all those displays, but sometimes you just gotta do with what you can afford. Amirite?