The biggest blunder in primetime went out with a whisper Tuesday night, as Jay Leno signed off his ill-fated 10 p.m. show with a few jokes but no tearful goodbyes -- or mentions of 'The Tonight Show,' for that matter.

"It seems like just yesterday I was telling NBC this was not going to work," the comedian said during his last 'Jay Leno Show' monologue. "This show was supposed to be on for two years ... but we got five months for good behavior."