Jay Leno will be back in his 11:30 p.m. 'Tonight Show' time slot very soon after his rocky venture into 10 p.m. territory, TMZ is reporting. Well that was quick ... and would make a lot of sense given our exclusive report from Rob Shuter a few weeks ago claiming NBC was looking to bounce Conan for Jerry Seinfeld. The switch hasn't been verified or denied by NBC at this time.