The first and the last episode of season 1 are starting with a sentence written in white on a black background. These sentences are taken from Buffy the Vampire Slayer: The creator is a huge fan of Joss Whedon.
Many little tributes to other TV series are hidden in the first season. For example, in the first season finale, when Johannes and Maykel are arguing, some of their lines are a reference to the argue between Riley and Buffy in Buffy the Vampire Slayer. There are other hidden tributes like that to Nip/Tuck and We Need Girlfriends.
Season 2's final episode was a Worldwide Premiere. It was the first time ever a web series had an episode in HD 3D. It was never made before for any other web series in the world. You had to wear red/blue glasses to see it in 3D (a 2D "standard" version was as well available).