Alexander will play a lizard handler for children's birthday parties with whom Christine goes out on a date.
I really enjoy Old Christine, even though the show has been very uneven. The shows are either very good or very bad. I believe that Old Christine breaks the Seinfeld Curse simply because she plays Christine as an older Elaine.
Having Jason Alexander on the show will bring a new audience and I think it is a great move. The highlight of Alexander's show, Listen Up, was when Wayne Knight ('Newman') was guest.