Youtuber Acksonl was at Fanime 2012 last week and shot some pretty sweet videos showcasing some of the best costumes at the con. Check it out!
Hahaha, look at the end of fan videos 1-3 and you will catch Ash training his pikachu next to the people with the signs. Hahahahaha
What's the, err, deal with the Red Ranger at 2:30 of the first vid? O_o