Another down-to-the-wire game between the Dallas Mavericks and Miami Heat dominated broadcast primetime last night against virtually no original competition. Game 3 of the NBA Finals, won by Miami 88-86 after a controversial call in Miami’s favor early on, drew an 11.1 overnight rating. Just like Game 2, last night’s game was down slightly (3%) from last year’s Game 3 between the L.A. Lakers and Boston Celtics but did better than the six previous NBA Finals Game 3s, including the one in 2006 between the Heat (without LeBron) and the Mavericks, which posted a 9.0 overnight rating. ABC, which also aired Jimmy Kimmel’s pre-game show, will easily win Sunday in both viewers and adults 18-49 when Sunday finals are released tomorrow. The only other first-run programs last night were newsmagazines 60 Minutes (1.3/4, 9.4 million) and Dateline (0.7/2). Of the repeats, Fox’s Family Guy (2.0/5) was the only show to crack the 2 demo-rating mark.