After the brouhaha over Jay Leno's 'Tonight Show' takeover, don't expect the reinstated king of late night to rest on his laurels. Now that Leno's back in his old time slot, we hear he's gunning for a battle with Letterman -- and he has his eyes set on Dave's home of New York City. Leno-Letterman scoop, plus details on Marie Osmond and more after the jump!