I think my favorite was the first Long Lost Friends week in the beginning of the year, especially since it seemed like a precursor of future fun LTM events.
I attended both the Star Wars May the 4th event and the Villains Friday the 13th event, and I thought they were both too crowded, especially the latter. My party and I were all extremely disappointed with the Villains event, and I'm so thankful we were staying at the Beach Club that weekend. Some of the tours sounded fun, but it's hard to make a two-hour trip on little notice, what with work and other responsibilities.