NBC noticed the early success of Friends and decided to re-shuffle its lineup to put that show in the 9:30 PM EST spot, leading to one of the most dominant programming blocs in TV history. The last two episodes aired in June 1995, during the period that was formerly called "Burn-off Theatre", when in the pre-reality TV era networks would make more money airing new episodes of already-doomed shows than it would for repeats from most shows that would return the following fall.
NBC observed Friends' early success and shifted its programming schedule to place it in the 9:30 PM EST slot, resulting in one of the most successful television blocks ever. The final two episodes aired in June 1995 during a period known as "Burn-off Theatre," when networks made more money by airing new episodes of shows that were already canceled than they would from reruns of most returning shows.