I loved them - I didnt completely get a few about PERL and a few other programming ones (other than generic recursion etc - I only took some JAVA and basic computer programming in college) but I did get most the rest (well never played Guitar Hero - but got the gist, and never been one for AIM, IRC, myspace, anyother weblag etc).
Alot of them brought back memories of math geekdom (Im an engineer - love math....must solve the infinite resistor problem!) and more than a few could have been written about me (I think about red lights in the context of queues and flow of traffic in the whole area, have odd walking patterns <whether cracks, tiles or travelling salesmen problems>).
EDIT - answer for infinite resistor problem:
http://www.geocities.com/frooha/grid/node2.html