Megacon is a 4-day event which takes place at the Orange County Convention Center in Orlando, Florida. The 2011 edition took place during March 25-27 and it had all sorts of activities such as panels, screenings, cosplay contests, autograph signing, larping etc.
Acksonl was at the event and he uploaded two videos on YouTube:
MEGACON 2011 FANVIDEO 1-2
MEGACON 2011 FANVIDEO 2-2
And here are some photos of the event from Howzie Muzika:
You can check out his gallery for more photos.
For more information about Megacon you can check out their website.