is one of the most respected and influential names in comedy and Judd Apatow
, who got his start as a stand up comedian, is almost certainly a huge fan. That said, you can almost bet Apatow is jumping for joy that he's close to casting the comedy legend as Paul Rudd
's father in his still untitled 2012 Knocked Up spin-off
. The film will star Rudd and Leslie Mann
, reprising their Knocked Up
characters, along with Megan ...