As NBC plans next year's Tonight Show handoff from Jay Leno to Jimmy Fallon, the network is taking a hard look at all of its late night options. That includes a potentially extreme makeover of Late Night With Jimmy Fallon once Fallon departs. The network has also given serious consideration to expanding The Tonight Show back to 90 minutes under Fallon, insiders confirm. Such an expansion might have led to a much smaller, 30 minute Late Night. But sources say the 90-minute Tonight Show idea has now been tabled.