EXCLUSIVE: 'Desperate Has-Been' Jay Leno 'Battling to Reignite Ancient Feuds With Rivals Jimmy Kimmel and David Letterman' in 'Comeback War'

Jay Leno has officially kicked off his 'comeback war' and is 'battling to reignite ancient feuds with rivals Jimmy Kimmel and David Letterman' as he plans to return to the small screen.