I've got a small enclosure Fox Calculator, and that (along with my Fuzzhugger Sonic Shroom and Dano French Toast) is one of the few pedals that I am unwilling to ever take off my board.
I've never met a pedal that did such perfect glitchy arpeggiation - just pure 8bit insanity. Other pedals do it, but all the ones I have played only seem to do that when there is some oscillation in play. The Wolf Computer does it perfectly, and without the need to dial in any oscillation or lower the volume level on your guitar.
I also found that running my Fox Calculator into an EHX Octave Multiplexer can add greatly to the synthy, video-gamey madness and really beef up those Atari arpeggios. I tried using a Boss OC-3 as well, and it sounded cool, but I think the exceptionally bad tracking on the Multiplexer makes it particularly well suited for my glitchy needs.
Dwarf Fortress

Final Fantasy 6


Fallout New Vegas


Also Chrono Trigger as others have pointed out

Also, more crucifixions

Also, this dog








