12x84 - Late Show with David Letterman

Dave calls up Patriots fan -- and ""D Fence"" guy -- Gary Wren, who drops an ""F bomb;"" Rupert learns karate at Tiger Schulmann's; the always on edge Jack Hanna with animals; Alan admits to being jealous of Jack Hanna, then has another hissy fit (and drops an ""F bomb""); Teri Polo on her experiences making Meet The Fockers.