Damoclesium (Hangin' over their heads, after all)
Yallseethisium
Salvationium (So named for appearing to be dense and multi-layered, but in the end revealed to be hollow and totally unbelievable)
Pennywisium (They all float down here, you know)
Anotherbughuntium
My vote still goes to Upsidaisium, since...well, let's face it, Cameron stole from everybody else, why NOT Rocky & Bullwinkle, too?