Of PowerShell and Other Things
I have a bit of a love-hate relationship with regular expressions. If like me they are not your absolute favourite things you will want to see the series of recent posts from James on the subject
http://blogs.technet.com/jamesone/archive/2010/01/14/the-joy-of-reg-ex-part-1.aspx
http://blogs.technet.com/jamesone/archive/2010/01/14/the-joy-of-reg-ex-part-2-ways-i-use-it.aspx
http://blogs.technet.com/jamesone/archive/2010/01/16/the-joy-of-reg-ex-part-3-select-string.aspx