Hellisng is still quite common hear in the UK, But Luna is right in saying it has phased out a little;
There's no where near as many as there used to be, but theres normaly at least one at every con I've been to.
Up and coming
Saber full armour (fate/stay night)
Utsuho Reiuzi (Touhou Project)
London Expo May 2010
J-Culture Con 2010