The show, which saw music producer Goldie and his professional partner Kristina Rihanoff become the first couple to leave the competition, averaged 8.89m (34.9%) for BBC One between 7.30pm and 8pm, while 289k (1.1%) tuned in on BBC HD.
However, the night belonged to The X Factor, after the talent show pulled in 12.33m (43.4%) on ITV1 in the 8pm hour and 813k (2.9%) on ITV1 HD.
After The X Factor, period drama Downton Abbey entertained 8.01m (30.3%) on ITV1 from 9pm and 289k (1.1%) in HD.
The two programmes enabled ITV1 to obliterate BBC One in primetime, after the Antiques Roadshow and Single Father - a new drama starring David Tennant - grabbed respective audiences of 5.96m (20.9%) and 4.84m (18.3%) from 8pm. The shows also had 177k (0.6%) and 215k (0.8%) respectively on BBC HD.
Earlier on ITV1, The Cube appealed to 5.07m (21.2%) from 7pm and 226k (0.9%) on ITV1 HD, but it was beaten by Countryfile, which brought in 6.82m (32.1%) on BBC One from 6.30pm and 152k (0.7%) on BBC HD.
Games Today mustered 1.03m (4.3%) on BBC Two in the 7pm hour, before Dragons' Den: What Happened Next? took 1.14m (4%).
Louis Theroux: Law & Order In Lagos entertained 1.57m (5.9%) in the 9pm hour, and it was followed by Mock The Week, which took 1.33m (6.6%). Andy Parsons: Britain's Got Idiots brought in 1.14m (8.5%) from 10.30pm.
Channel 4's The Genius Of British Art appealed to 600k (2.5%) in the 8pm hour and 53k (0.2%) on timeshift. It was followed by Undercover Boss USA, which had 830k (2.9%) and 179k (0.7%) on Channel 4 +1. The terrestrial premiere of Looking For Eric secured 720k (3.4%) from 9pm and 100k (0.8%) an hour later.
Over at Five, screenings of Spider-Man 2 and The Da Vinci Code grabbed respective audiences of 1.4m (5.6%) and 2.21m (11.9%) from 6.30pm.
Overall, ITV1 owned primetime with 28.5% (HD: 1.4%) against BBC One's 22.7%. Five came in third with 7.8%, followed by BBC Two with 5.2% and Channel 4 with 3% (+1: 0.4%).
Elsewhere, The Xtra Factor took the biggest multichannel audience of the night, after 1.07m (4%) watched on ITV2 in the 9pm hour and 132k (0.8%) tuned in an hour later.
The spinoff show was followed on ITV2 by new reality series The Only Way Is Essex, which had 918k (5.2%) and 64k (0.7%) on timeshift.
Sky1's new detective series Thorne, which stars David Morrissey, premiered to 403k in the 9pm hour.
BARB ratings data supplied by Attentional