Original: The success of the original series led to the creation of two revival series : one series that ran for several seasons on CBS and in syndication in the 1980s , and another series that ran on UPN from 2002 to 2003 .
Simplified: The success of the original series started two revival series : one series that ran for several seasons on CBS and in syndication in the 1980s , and another series that ran on UPN from 2002 to 2003 .