While few people here deal with "ultrafast" electronics, this one is food for thought.
Its not as "perfect" as wiki claims, but interesting. Found while looking for a low inductance resistor for a diode driver, and it distracted me for a good 10 minutes. Bad Steve, Bad... Bad... "Must save the Brain..."
http://en.wikipedia.org/wiki/M%C3%B6bius_resistor
Mobius resistors.
Cool!
Steve