The “Dear Boss” letter, the “Saucy Jacky” postcard, and the “From Hell” letter are correspondences sent to the police in 1888 who were investigating a still unsolved case involving a suspect known by what name?

The Nickelodeon Kids’ Choice Award for Favorite TV Shows has been awarded multiple times to four shows that originally aired on Nickelodeon. Name any one of those four shows, which ran from 1994-2005, from 2004-2007, from 2007-2012, and from 2010-2013.