With a big celebration on-screen and off-screen for one of TV’s top shows, a visit to an Arrow of the future, some Top 10 finalists and a dramatic divorce turn, there was a lot going on last night on the small screen. Not so much with the ratings, which, with a few exceptions, pretty much saw small upticks and dips from last Thursdays – even as Donald Trump and the remaining GOP contenders clashed on CNN in yet another debate

The top rated and most watched (15.68 million) show of the night was The Big Bang Theory (3.7/8), which celebrated its 200th episode. Up 3% in viewers, the nerd comedy is currently even with the early numbers of its February 18 show, which rose to a tenth in the final numbers. That’s not uncommon for BBT so we could likely see it happening later today.

The announcement of the Top 10 plus a performance by the most successful past winner Kelly Clarkson gave a 5% lift among adults 18-49 to American Idol (2.1/7). The 2-hour Fox competition show matched a full of relationship twist and revelations and down a tenth Grey’s Anatomy (2.1/7) last night. A visit to the Star City of 2046 saw an appearance by Arrow’s Stephen Amell on the CW’s DC’s Legends of Tomorrow (0.9/3), which was up 12% in the demo. With a 10% rise in viewership to 2.46 million, the WBTV motley crew series hit its highest overall viewership since its second week show of January 28. Legends’ lead-out The 100 also had a double-digit demo rise with a 20% jump over last week.

Like last week, Fox was tops in the demo with a 2.1/7, up obviously from last week. CBS was second in the demo with a 1.9/6 like it was on February 17 but down a touch to 8.54 million with its viewership Number #1 spot.

After BBT, Life In Pieces (2.2/7) was up 5% while Mom (1.8/6) was even with last week and 2 Broke Girls (1.7/5) went up 13%. Ending the night, Elementary (1.1/4) rose a tenth from its February 17 airing. If past weeks are any indications, that may happen to Scandal (1.7/5), which right now is even with last week’s fast affiliates result – which went up to a 1.8 in later numbers. How To Get Away With Murder (1.5/5) is currently even with last week’s fast nationals.

NBC’s night started out with You, Me and the Apocalypse (0.6/2) also even with last week. The Blacklist (1.3/4) was also even with its February 17 season low while JLo’s Shades of Blue (1.0/4) declined 9% to hit a new low in early results.