http://www.youtube.com/watch?v=s8g6488KKQQ&feature=related

This is a 2d ident that was done by Nickelodeon. Most idents last a few seconds. This ident is a very short one with a basic concept behind it. This shows that idents do not have to be too complicated in order to execute the brand. The ident just has a character burping into the air with all types of stuff. But at the end of it Nickelodeon forms.