I doubt that Comedy Central and MTV are owned by Viacom, so there is no need for their partnership.
Answer = Central Nervous System
Broadcasting System of San-in was created in 1954.
Mutual Broadcasting System ended in 1999.
Shizuoka Broadcasting System was created in 1952.
Kalayaan Broadcasting System was created in 2001.
Amalgamated Broadcasting System was created in 1933.
Amalgamated Broadcasting System ended in 1933.
Yamanashi Broadcasting System was created in 1954.
Seoul Broadcasting System was created in 1990.
Maritime Broadcasting System was created in 1969.
Spanish Broadcasting System was created in 1983.
Educational Broadcasting System was created in 1990.