OK, I've been pressured to give an official update, here it goes:
Oompa loompa: Someone who agrees with Erik on absolutely everything, and will even defend him in absentia. This has been expanded to anyone with a tendency to say "me too" to anything written by a senior poster.
Packages: Members of the forum have began an unusual correspondence with each other (proudly dubbing themselves the care crew), mailing packages with assorted bizarre objects, especially foreign snack foods, racially insensitive items, and unwanted CDs.
Doritos: The package trend was initiated when Lizard was shocked to learn that they are not sold in Sweden.
one-star bandit: At one point, every last recently active thread was rated with one star, which although meaningless caused a lot of irritation. Eventually traced to Birkenau.
bad taste in women: Erik and other people easily bored with heavily retouched photos of Hollywood starlets, or who complain about the omnipresent porn threadjacks, are often accused of this.
Nemtheanga: Primordial frontman with an incredibly powerful voice, or after Heathen Crusade, the most frequently dropped name on the forum.
ITT: In this thread. Not exclusive to RC.
Official recommendations: A scheme devised by Jay in which three people per week post recommended music with detailed descriptions and samples. So far this has produced mixed results.
Yousendit: Preferred method for posting samples, whatever you do don't use another site or a format other than mp3.
SunnO))): Another band alternately revered and despised in equal amounts here.
Lurch's speedo: Along with the NAD baby pic, the most frequently photoshopped picture of an RC member (and definitely the most disturbing one.)
I'm sure I'm forgetting a lot, will look through the archives again...