Usability Test Data Logger
Most people use Microsoft Excel to analyse the results of usability tests, but did you know you can use it to collect the data too? This spreadsheet allows you to measure task completion rates, analyse questionnaire data, and summarise participant comments. It even includes a timer so you can measure time-on-task.
Best of all its available free of charge!
Don't forget to get the PDF to help you work your way though things if you've not used anything like this before