I mean, The Mystery of Edwin Drood by a mile. Nice Work's great if you can survive Broderick's performance which almost put me into a coma, and Once seems pretty hit or miss for when the leads decide to show up. Not trying to rag on them, but...things to consider.
If you want a play though, I definitely agree with Who's Afraid of Virginia Woolf? Amazing.
"Get mad, then get over it." - Colin Powell