Claim: William Shatner appeared in a NBC series.
Evidence: Shatner also appeared in the NBC series , 3rd Rock from the Sun in seasons 4 and 5 as the role of the `` Big Giant Head '' whom the alien characters of the Series reported to.
3rd Rock from the Sun -LRB- sometimes referred to as simply 3rd Rock -RRB- is an American sitcom that aired from 1996 to 2001 on NBC.