If you've never seen the inimitable performance artist John Kelly now's your chance: The Escape Artist (Performance Space 122 thru TONIGHT!!!)
or...
Also last chance today, the Amsterdam-based avant-garde theater collective Dood Paard stage Schnitzler's play La Ronde as Reigen ad lib at the Guggenheim. Should be amazing or....
Snippet of Viva bird-brain - but Sigmund Freud was so amazed by this 1897 play that he wrote to the playwright stating that the play had elucidated every 'theme' of Freud's and Schnitzler was an artist 'to boot'!

And the great improv music, video etc Tony Conrad gives a lecture at the SVA (Tues)
For couch potatoes, the Mubi website streams 4 favorite films from past Tribeca festivals for @$2.99.