I would say the best was PushPlatformer, it had a unique stlye of play that also was just alot of fun to do, I liked making the weird forcefield thing. Forest Warrior was also a lot of fun, and the 8bit mix of Eye of the Tiger made it that much cooler. One Step Back had a slightly philosophical message which is relatively uncommon in flash games, and had quite a few unique characteristics in the gameplay as well as a clean look. Lastly, although Ghosts Stole My Puppy was very similar to Luigi's Mansion, I found it to be a lot of fun and it had some funny items. Overall, I would say PushPlatformer was my favorite in this category, though.