The second night of Jay Leno’s Tonight Show v 2.0 dominated late night again with a 4.6 household rating/12 share in early household metered markets data from 11:30p-12:30a to Letterman’s The Late Show 3.1 rating/ 8 share. ABC’s Nightline had a 3.0 rating / 7 share and Jimmy Kimmel Live trailed with a 1.7 rating / 5 share. Adults 18-49 data: * “The Tonight Show with Jay Leno” (1.6 rating in adults 18-49) led the time period over CBS’s “Late Show with David Letterman” (1.0) and ABC’s “Nightline (0.9) in fast national “live plus same day” ratings from Nielsen Media...