A new puzzle showed up on page 2 of the Ottawa Citizen a few weeks ago. It's called Ken Ken and is billed as "the logic puzzle that makes you smarter". I decided I wanted to be smarter so I sharpened my pencil and dove right in.
I love this puzzle and I put into the category of puzzles I love, which so far only had one other member... Cross Sums (aka Sum Totals or Kakura).
Puzzles I don't love and are sort of a waste of time but are alright for doing on the bus: Sudoku.