Viacom Inc. (VIA, news: 30.51 +0.25 +0.83%, cap: N/A, 1yr target: 35.34), the media conglomerate, owner of MTV Networks, Comedy Central, Nickelodeon cable networks and Paramount Pictures, reported fourth-quarter profit rose fourfold, on video sales of Transformers 2 and Star Trek. Revenue generated by Viacom’s media networks, including such cable channels as MTV, VH1, Nickelodeon, Comedy [...]