If you record videos of your automated acceptance tests (we are using CamStudio), an excellent addition is to install the free Prism HUD utility. This will give you on-screen (but transparent to mouse actions) CPU / disk / network and memory statistics which can be very useful when reviewing these videos. It appears to be the only application that allows reporting of metrics of any process that exceeds a certain (configurable) delta, or is over a certain (configurable) threshold. This means you get much more useful information than just a summary metric (e.g. total CPU utilization), but you don’t clutter your screen with the metrics for all processes, just those ‘that matter’ at any point in time, automatically!!
Go get it here.