So a couple weeks ago, I bought a HRM (Heart Rate Monitor) to try and take a more intelligent approach towards exercise. It also serves the alternative purposes of motivating me to exercise more since I can see my progress, as well as the guilt factor of blowing a bunch of cash on something.
I finally got around to using it for an actual workout yesterday, and it's fantastic. Not only could it track my progress throughout the entire workout, it comes with a bunch of built-in reports that show things like time spent in each target HR. Cool stuff.
From the gadget perspective it's also great because it has a nifty upload/download mechanism that works by making noise. It works like an old school modem via a microphone on your computer.
Now I've got the additional incentive of getting to play with a cool toy. =)