It has NOT yet been announced to the public that Nick will be in the cast. Daniel Henning, Founding Artistic Director, wanted to let the Jossverse know first so that they can buy their tickets before the play sells out (it happens often with the Blank Theatre). Previous Jossverse actors who have performed at the Blank Theatre are Tom Lenk, Leonard Roberts and James Marsters. In 2006 Nick performed with Noah Wyle in “Lobster Alice”.
Having had season tickets for many years (and having seen the above mentioned performances too) I can affirm that tickets sell fast and there is no such thing as a bad seat.
More Info and link to buy tickets can be found at:
http://www.theblank.com