Of course, I might be biased given my perl-related job, but I think this column is a fantastic column on the language. In fact, two of the three questions in the most recent issue have already came in handy. The questions usually target beginners, but it has unveiled a thing or two I didn't know. It's usually a full-page cartoon. It mostly seems to focus on IPOs and business moves, so I don't really have much interest here.
Reviews are reviews of various hardware and software products of interest to linux users.
Zonker's Product Picks is mostly a collection of software and hardware that the author of the column finds cool. Good job here.