Charm Dalitz Analyzes from Cleo-c *

I discuss CLEO-c opportunities in Dalitz plot analyzes with the data samples available now and projected by the end of CESR-c run. Using 281 pb−1 of e+e− collisions at mass of ψ(3770) we present results of the Dalitz plot analysis of D → π−π+π+. Using the CLEO-c and CLEO III samples of 5 pb−1, accrued at mass of ψ(2S), we study three body decays of χcJ produced in the radiative decay ψ(2S) → γχcJ , where J=0,1,2. A clear signal from at least one of χcJ is found in eight final states: π +π−η, π+π−η′, K+K−π0, K S Kπ, ηK+K−, πpp̄, ηpp̄, and ΛKp̄. For these modes we measured or set an upper limit on the branching fraction. A Dalitz plot analysis is performed on three modes χc1 → π+π−η, K+K−π0, and K SKπ.