I won't answer the original question- all of my favourites have been well covered...
But not a single mention of the Force Unleashed games? Has everyone here given them a fair shake?
I played the demo for the first game and decided I would pass on it. I had a friend pressure me into playing the full game, and I'm glad I did. I found the game much more enjoyable than I would have thought- given the demo. I also fell more in love with the game when I played it on its hardest difficulty. What was once just a button masher became a tactical skill based game. (Watch out for the boss at the end of level 2, however. He was darn near impossible on 'nightmare')
Force Unleashed 2 felt more like a 6 hour DLC than a sequel, but as long as you only paid $10 for it (like me!) then you could just consider it a pretty darn good $10 stand alone DLC!
The best parts, however, are the OT Infinities DLC. They are 3 "What if?" missions that take the place of ANH, ESB, and RotJ. Lots of fun. You kill Obi-Wan (twice!), Han, Chewie, Leia and Luke (by throwing the Falcon at him- no joke!)
The story is fun, and well told, though I wouldn't consider it canon. It has good characters and is, I would argue, the most OTish Lucasfilm product of the past 20 years.