In addition , he made a guest appearance for several episodes as Davey Jessup on the Mary Hartman , Mary Hartman show .
Will Seltzer is an American actor who had supporting roles in films such as Johnny Dangerously , The Wizard and More American Graffiti .
In addition , Will Seltzer made a guest appearance for several episodes as Davey Jessup on the Mary Hartman , Mary Hartman show .
Will Seltzer is an American actor who had supporting roles in films such as Johnny Dangerously , The Wizard and More American Graffiti .