Disco Caller Android Caller ID App

I got the chance to explore the Disco Caller app which is available for free at
https://play.google.com/store/apps/details?id=com.game.vizteck.discocallerid
I think it is a cool app as it lets me assign animated characters as Caller ID.
The best character is PSY doing his Gangnam Style.
Do check out the link above and let me know what you guys feel about it