Nickelodeon and ARTS/A&E used to do this. Nick during the day, A&E at night.
Right - I remember that! And when A&E got its own channel, that gave the reason for Nickelodeon to develop Nick-at-Nite.
Nick-at-Nite was actually quite a good channel from when it started in the mid-1980s until the second half of the 1990s. Classic sitcoms and other shows. Excellent! Then it degenerated into "classics" that barely seem out of their first-run status.
Current Nick at Nite needs to kill off the George Lopez Show. It's been on since 2005. 3 1/2 more years and you've got ten years on Nick at Nite... in an average year, I'm sure I see each episode about 3-5 times.
That 70's Show is a funny show, but I really don't think it needs to be on NaN yet because of it only being 6 years young since it was ended. My Wife and Kids is the same way. I can see Married: With Children being on there, but I really don't like it [the show] because of the traditional 90's sitcom with usually weird or stupid kids and a fighting husband and wife. Seen too many of them (Home Improvement).