Every now and then RegEx is handy for text parsing and we all know how fun it can be trying to remember the syntax for more complex stuff sometimes, so here's a great little tool that'll assist you in writing Regular Expressions.
http://www.codeproject.com/dotnet/expresso.asp?df=100
Mr. A, since you have presumeably used it, does the "code" menu allow more than just C/C# for the output? Like Javascript/EMCAScript, or PHP?
Also for anyone who is in the "I've never used Regular Expressions and I keep meaning to learn but I don't have the time and/or don't think I could ever learn them since they're too complicated" boat, check out this handy tutorial:
http://www.codeproject.com/dotnet/regextutorial.asp
Since I only use it for C# and Java I haven't really looked, but the output from Java should work for JavaScript (they adhere more to Perl RegEx than MS does currently).