Well, we've done it! Head on over to grab the latest release of PowerShell's most advanced and feature-rich snap-in!

http://www.codeplex.com/PowerShellCX

I'm pretty proud of this one. I wrote the archive cmdlets write-zip, write-bzip2, write-tar and write-gzip. I also wrote a general purpose assembly resolver cmdlet, resolve-assembly, and also an AssemblyCache provider; yes, the GAC.