The concluding episode of Joss Whedon's sci-fi saga was up slightly on the audience for the penultimate episode.
Dollhouse was edged in the 8pm hour by a new episode of Smallville, which pulled in 2.52m for The CW.
ABC's Supernanny brought in a reasonable 4.72m, while a repeat of Law & Order nabbed 6.76m for NBC. CBS's Ghost Whisperer won the hour with 8.34m.
CBS continued strongly in the 9pm hour, taking 7.98m with Medium. NBC's Dateline had 7.35m. ABC's Shark Tank was third with 4.38m.
The season premiere of Kitchen Nightmares drew 3.28m for Fox, while a repeat of Smallville gathered 1.48m for The CW.
At 10pm, Numb3rs dropped to 8.7m but won its slot for CBS, with ABC's 20/20 close behind on 8.07m. The Jay Leno Show put in 4.95m for NBC.