(Note: this only applies to the Anime & comics and Video Game GeekNights)
When you think geek, you think of someone who is smart, but in addition they are also narrowly fanatic about a certain thing like Star Trek or biology.
Rim and Scott are two geeks who are narrowly focused on a few mainstream vices, but they are also into things like german board games and slightly obscure anime from the 1980s. Personally, I think what makes me want to listen to them is also what shouldn't. They aren't totally involved in mainstream pop culture, and they make it explicitly known. They don't have traditional radio voices, and oftentimes they sound happy and jovial. They are always upbeat and tend to sound genuinely excited to be putting on a show.
Yet, from listening for only two months, I have discovered that Rim and Scott are very egotistical, l33t, and they have little patience for things that don't have some complexity underneath or are intellectually stimulating. A couple example is their choice of podcasts to listen to and their ambivalence as to the appeal of the videogame "Devil May Cry"
So if you think that you know what it is to be weird, to be on the fringe, or to be in on something obscure, you should give Rim & Scott a try because they live on a whole other continent in the world of geek.