Filthy Rich (1982)

When Big Guy Beck dies, the heirs to his estate are given a stipulation via a pre-recorded video will: Before they inherit his wealth, they must live with Big Guy's illegitimate son, Wild Bill Westchester, and his wife Bootsie and learn to accept them as their own family. This doesn't bode well with the snooty Becks, and petty rivalries and catfights soon ensue in this sitcom spoof of 1980s primetime dramas.