It's the biggest and most popular franchise in history, and since it's a slow (no) news period and I am still on a Star Wars high from the Blu Ray release and ongoing Cloine Wars toon, I thought I'd do an article on what I feel are the top 10 most important figures in the saga based on their impact to the overall story and key parts of the saga.
10. R2D2

The little guy is a bit of an unsung hero, he gets the heroes out of tight situations more often than any other character in the saga, and more importantly without his heroics on Tatooine, getting the plans to Obi Wan, Luke's journey would never begin.
9. Boba Fett

He tracks Han Solo to Bespin thus allowing Vader to lure in Luke and attempt to capture him. He then leaves with his bounty, Han Solo, and sets up the first real test of Luke as a Jedi, as the son of Anakin Skywalker takes on the powerful crime lord Jabba the Hutt to rescue Han.
8. Princess Leia

A strong force in leading the rebellion against The Empire and the one that gets the origjnal Death Star plans away from Vader setting the whole fight back in motion. Also kills Jabba the Hutt.
7. Han Solo

The scoundrel captain of the Millenium Falcon is the man that gets Luke and Obi Wan to the Death Star and helps rescue Leia, he also prevents Vader from killing Luke in the Death Star trench before blowing up the shield generator housed on Endor, allowing the rebel alliance to finally finish off The Empire.
6. Jango Fett

Lures Obi Wan Kenobi away from Anakin; allowing Palpatine to place Anakin in the role of protecting Padme and putting them alone together thus twisting Anakin further from his path. However most important due to the fact he provided the DNA that created the Clone army that would eventually wipe out the majority of the Jedi and allow The Sith to take controlof the Galaxy.
5. Yoda

The greatest Jedi of them all, saved Obi Wan and Anakin from Count Dooku, led the Jedi council through the Clone Wars and completed Luke's training, enabling him to defeat Vader and end the Empire.
4. Luke Skywalker

The true hero of the saga, the one that restores order to the Galaxy and turns his father back from the dark side, to a degree it was too little too late for the chosen one, but it allowed his soul to rest in peace.
3. Emperor Palpatine

The master manipulator, trainer of Darth Maul, corrupter of Count Dooku and the man that took out the Jedi after turning the chosen one Anakin Skywalker. He engineered an entire war to reach his endgame and ruled the Galaxy for 20 years.
2. Obi Wan Kenobi

Defeated Darth Maul, General Grievous and Anakin Skywalker, but his reluctance to finish off a man he trained and saw as his borther allowed his former Padawan to become Darth Vader and carry out the purge of the Jedi. 20 years later he started the training of Anakin's son Luke and sacrificed himself to become his mentor.
1. Anakin Skywalker/Darth Vader

He is the central figure of the entire saga, from Pod racing slave boy believed to be the chosen one, to cocky young Jedi dealing with anger and darkness within, all the way to his turn to the dark side, leading the Jedi purge and in the end finding a degree of redemption through his son Luke by killing The Emperor Palptine, something he should have done 20 years earlier.