Free statistical software is available and just a click away. T-test, manova, regression, time series and it is an easy download and install in many cases. Now you can do things that in my youth could only be done with a Cray Super Computer.
SPSS is really nice and I'd prefer it in most cases, but it seems like every so often I have a friend or a "poor student" who is doing a project, or wants to do one statistical test, but doesn't want to pay for a full version of SPSS or SAS. Well now you can do some pretty fancy stuff, even on a mac, with free software organized at: