Sign me up. This has pretty much become my favorite sketch comedy show.
I'd recommend the DVD Let America Laugh for any David Cross fans out their as well. Not as funny as Mr. Show, but rather interesting in it's own right.
It's coming. I haven't posted any news on TVShowsOnDVD yet because there just wouldn't be more to say than that...yet.
I would hope that after successful sales of the S1&2 set, and the S3 set, that fans wouldn't need a simple "it's coming" post to know that it would hit sooner or later and finish off the series.
I'll post news when I actually have something to report!