Alan Cumming and Kristin Chenoweth are (separately) starring in pilots for CBS this season.
I think Mullaney had a show that tanked on Fox, no? I was sitting next to him or Kroll at Mile End Deli one day and had no idea which one it was. They may be well known in the standup world, but this is The Broad-way.
I do think Andrew Rannells would be excellent. Maybe paired with Josh Gad?