Monday, October 8, 2012 ratings — It was a night of all originals. Gossip Girl returned for its final season and a new year of 90210 debuted as well. We also had original episodes of How I Met Your Mother, Partners, 2 Broke Girls, Mike & Molly, Hawaii Five-0, The Voice, Revolution, Dancing with the Stars, Castle, Bones, and The Mob Doctor.

On NBC, The Voice was up slightly from last Monday’s installment with a 4.7 rating in the 18-49 demographic with 12.58 million total viewers. It won the night in both categories. Revolution followed with a 3.1 rating (-3% week-to-week) and 8.21 million.

On CBS, we had the usual line-up. How I Met Your Mother attracted a 3.2 rating (-3%) and 8.14 million viewers. Struggling Partners grew a little with a 2.2 rating (+5%) and 6.34 million.

At 9pm, it was 2 Broke Girls with a 3.7 rating (+6%) and 10.12 million. Mike & Molly followed with a 3.1 demo rating (+7%) and 9.42 million.

Hawaii Five-0 ended the night with a 2.2 rating (+10% change) and 9.01 million. It was tied for second place in the demo and was in second in viewership.

On ABC, Dancing with the Stars drew a 2.1 rating (0% change) and 13.33 million. Castle followed with a 2.2 rating (+16%) and 10.56 million.

On FOX, Bones drew a 2.0 rating (-5%) and 7.09 million viewers. It was followed by struggling Mob Doctor with a 0.9 rating (-10%) and 3.46 million.

And on The CW, two shows returned. The season premiere of 90210 brought a 0.5 rating in the demo with just under one million viewers. Year to year, the show was down by 44% in the demo (vs a 0.9 rating) and down by 38% in viewership (vs 1.61 million).

That was followed by Gossip Girl with a 0.4 demo rating and 0.768 million. Year to year, the show was down by 43% in the demo (vs a 0.7 rating) and down by 44% in viewership (vs 1.37 million).

What do you think? Are you surprised by the declines of the CW shows? What were you watching last night?