Take a look at Anxiety, a nifty little to-do tracker for OS X. It uses the new Calendar Store in Leopard so that it keeps your to-dos in sync with iCal and Mail (and therefore also any devices you may sync with iSync). Best of all, it's free!
 

OmniFocus is a great app for tracking and improving your productivity. It's currently in beta, and you can download a free copy to test/play with here. The Omnigroup is offering a special discount to beta-testers - if you pre-order before January 8, 2008 you can get OmniFocus for $39.95 as opposed to the release price of $79.95.
 

Merlin Mann of 43Folders is a smart guy when it comes to managing all the facets of your "digital life". Here is a presentation he gave recently at the IDEO offices. The 43Folders name comes from David Allen's Getting Things Done methodology, so if you're a following of that way of thinking, then you'll be right at home with Merlin.

A friend of mine asked me if I could take a look at his Drupal installation - apparently whenever he enabled a particular module his entire site would crash. "Sure, no problem. I'll take a look this weekend and we'll get it sorted out for you" was my response. But something came up that weekend and I put it off. I figured that it wouldn't take me long to figure out, so I could do it Monday. Of course, when Monday came around, something else took precedence and I put my friend's problem on the backburner.