It was a slow, off-season night on the broadcast networks, won with a 1.3 average among adults 18-49. That was accomplished by the two networks that offered all-original programming last night, Fox and NBC. Fox aired a two-hour So You Think You Can Dance (1.3), which was down 13% from last week. NBC started off slow with the final two episodes of cancelled freshman comedy Growing Up Fisher from 8-10 PM. Both drew a 0.9 in 18-49, down 25% from the series’ last original more than a month ago, which aired behind The Voice and a new About A Boy. As should be expected, that was a series low. Even 20 years after he became a murder suspect, O.J. Simpson is proving to be a bigger draw than NSA whistleblower Edward Snowden. Dateline‘s two-hour special The People Vs. O.J. Simpson (1.4) was the top program of the night in 18-49, up +8% from NBC News’ most recently special on Snowden. Elsewhere, ABC’s Motive (0.7) plunged 36% from last week, while the season finale of the CW’s The 100 (0.5) dropped a tenth (17%) from last week to tie a series low.