We all love Old School Nickelodeon ... otherwise y'all wouldn't be a part of this spot. But what and when does OSN exactly refer to? Does it refer to the '80s? '90s? '00s? There seems to be a lot of debate over which shows can be considered OSN (which is great -- please debate more) but here is a list of Nickelodeon shows from the 1980s-1990s, the prime OSN years, as based upon their airings in the US. Hyperlinked shows are the programs most agreed upon as being part of the OSN subset. But what do you think? Which show(s) would you include/not include under the "Old School Nickelodeon" category?...