Per the press release
we received this information:
David Hasselhoff heads back to the water in this year’s Piranha 3DD. He joins the previously announced cast, which includes Ving Rhames, Christopher Lloyd, Paul Scheer, Gary Busey, Katrina Bowden, Danielle Panabaker, Matt Bush, Chris Zylka, David Koechner, Meagan Tandy, Paul James Jordan, Jean-Luc Bilodeau, Hector Jimenez, Adrian Martinez, and Clu Gulager.
Trading in the sandy beaches of “Baywatch” for terror at The Big Wet Water Park, Hasselhoff will face off with the flesh eating fish of Piranha 3DD.
A Dimension Films release produced by Mark Canton, Marc Toberoff and Joel Soisson; executive producer Chako van Leeuwen; and co-producers Pete Goldfinger and Josh Stolberg, Piranha 3DD opens nationwide on November 23, 2011.