The 17th annual Del Close Marathon weekend hosted by UCB co-founders (Amy Poehler, Ian Roberts, Matt Walsh, and Matt Besser) and will continue that evening and non-stop through the weekend with 575 improv shows at nine different stages including the UCB Chelsea, UCB East, Theater for the New City (2 stages), 4th Street Theatre, Magnet Theater, SVA Theatre (2 stages) and FIT Haft Auditorium.