9 comparisons between the first and last episodes of popular TV shows

When you watch a series for a long time, sometimes it's hard to notice the changes the main characters go through because you've been watching them on TV for years. It's no doubt shocking to compare their before and after photos, but it allows us to see what different actors look like - like the cast of Friends, who went through dramatic physical changes over the course of 10 years.

We want to share some photos of the first and last episodes of some of the most famous, longest-running series of all time.

9 PHOTOS

1. Big bang theory.

The series was released on September 24, 2007, and ended on May 16, 2019. It ran for a total of 12 seasons. The decision to cancel the series came after Jim Parsons (Sheldon Cooper) announced that he no longer wanted to work on the project. It wouldn't make much sense to continue without him.

2. Friends.

Friends, one of the most loved comedies of all time, aired on September 22, 1994, and ended on May 6, 2004, after its tenth season. Joe, Phoebe, Monica, Chandler, Ross, and Rachel have found a place in the hearts of thousands of viewers.

3. Show of the 70s.

The television comedy premiered on August 23, 1998, and aired until May 18, 2006, for a total of 8 seasons. He is remembered for introducing us to the actors who would later become great Hollywood stars such as Ashton Kutcher and Mila Kunis.

4. Gossip girl.

Blair, Chuck, Dan, and Serena marked the teenage years for many viewers with Gossip Girl. The series runs for 6 seasons, starting in 2007 and ending in December 2012, it has received several nominations for various awards and won the 2018 Teen Choice Award.

5. Two and a half people.

Two and a Half Men ran for 12 seasons after airing in September 2003. The show's biggest controversy came when the crew replaced Charlie Sheen - who "died" on screen - with Ashton Kutcher. The most outstanding transformation of all the actors in the series is Angus T. Jones. He was only 9 years old when the series began, and although he later decided to quit the series, he made a special appearance in the final episode.

6. This iconic cop drama has ended after 12 seasons. The premiere took place in 2005, and the series ended in 2017.

7. Supernatural.

The fifteenth and final season are still in development. The producers originally thought the series would run for 5 seasons, but after its huge success after its premiere in September 2005, they decided to renew it. Unfortunately, it has already been announced that this will definitely be the last season.

8. How I met your mother.

Some people compare this comedy to friends even though it will be a modern version. Instead of drinking coffee, friends spend their free time at the bar. Production began in 2005 and ended in 2014 after 9 seasons.

9 Gilmore Girls

The series started on October 5, 2000, and ran for a total of 7 seasons, in which viewers watched Alexis Bledel grow up. The funny thing is that after 9 years, Netflix decided to release a sequel. It included four episodes with the titles of each season, each one and a half hours long.