1. Gilmore Girls

Now, I absolutely love the Gilmore Girls. This was definitely one of my favorite shows when it was on and I couldn't wait until the next new episode to come on every Tuesday. Was I disappointed by the series finale? Yes! I thought that they could have done it completely differently and that's why this was one of my worst TV series finales. I would have loved to see Luke unmistakably together with Lorelai, would have loved to see Rory marry Logan.

2. United States of Tara

I loved this show. I thought that this show was so unique and so different. It was about a disorder that doesn't get a heck of a lot of light shed on it. The ending? It was weird, it was awkward, it didn't tie up anything! I think that this show could have gone on for one more season and it would have been great!

3. Roseanne

All right, so I am actually re-watching all of the Roseanne episodes out there and this series finale killed me. I hated it. It was all a dream/story that she made up and DAN DIED! Did you know that? Dan died. How could they kill off one of the best characters on there? This did not tie anything up and it wasn't beautiful – it was sad and I wish that they would have let Dan live, let them win the lottery and let everything stay the same.

4. Entourage

Oh, this was my 'WTF' moment. When I watched the Entourage series finale, I stayed at the TV for a few more seconds after it ended wondering what I just watched. I think that it could have gone in so many other directions and been so much better!

5. Lost

I really think that Lost was one of the biggest disappointments in the way of series finales. There were so many burning questions that I had and honestly, what? Did you have the same moment I did when you watched the Lost series finale? Were you upset by it?

6. Dinosaurs

All right, so the only reason that this series finale is on the worst list is because it's so, so sad – and it can be confusing for the kids that watched the show. Basically, extinction comes into play and the entire family freezes to death – or at least, that's what they 'imply' happens. Crazy, right? In a show that everyone loved? I think they should have changed it completely and just had it fade out.

7. The Sopranos

'WTF,' Sopranos?! You were such a good show when you first came on and through most of the seasons! How do you end a series that was this iconic like that? Truthfully, I had so many burning questions and I was so upset, I vowed I wouldn't get into another show like that.

8. Seinfeld

Seinfeld was one my favorite shows after it was in syndication. I just loved watching Jerry, Kramer, George and Elaine and all their crazy antics and conversations about nothing. Some have even gone so far as to say it’s the best show ever. Be that as it may, their series finale was a total fail! The show basically ended with the fab four in jail for violating a Good Samaritan law talking about nothing!

9. Beverly Hills, 90210

Beverly Hills, 90210 was a super popular drama in the 1990s that chronicled the lives of a group of high school friends in Beverly Hills. The cast ended up going through a lot of changes and the series finale was a total bore. Dylan returned to the series, Donna and David got married and Brenda was nowhere to be found.

10. Sex and the City

Even though SATC lived on with two films after the series finale, I can’t help but think back to how disappointing the show ended! I felt like I knew Carrie, Samantha, Miranda and Charlotte like my own friends and I think they deserved better! Yes, I’m happy Charlotte got a baby but Carrie’s whole Paris situation was just not her!

11. The X-Files

The X-Files was a great sci-fi series that came out like a lion and went out like a lamb. To make matters worse Agent Mulder, played by David Duchovny, was only seen intermittently throughout the final two seasons. Although there were X-files movies, fans were still left with many questions unanswered and without any closure.

12. Alias

J.J. Abrams’ smart, sexy spy-drama series Alias is another TV series that ended leaving many fans wanting more. The few final episodes were jam-packed with information since ABC decided to shorten the series, which infuriated many fans as it made the show harder to follow. While many will agree that the acting was incredible, Jack dying and Irina being evil just didn’t do it for fans.

13. The West Wing

A clever TV show about the White House would surely leave fans with a fulfilling and exciting ending, right? Not the case with The West Wing! Many people argue that the inauguration of a new president was just too easy and that they expected so much more from the show.

So, while these are my 'WTF,' worst series finales, do you have any more that you can share? Do you have any more that just pissed you right off?