Puzzle Pointers - a one stop shop for links to daily puzzles from a variety of sources including the NY Times, LA Times, CrosSynergy, and Newsday
Rex Parker Does the NYT Puzzle - a fantastic blog which analyzes each day's NY Times Crossword Puzzle. A great way to learn and prepare for the competition. Be sure to check out The Pantheon, a list of words used over and over (and over) again in NY Times Crossword Puzzles.
Crossword Drawings - daily drawings based on the NY Times Crossword puzzle