Look at the Copper Union logo. Visit their site – it actually has a dynamic function which changes, mirroring the mission of the school (cross-disiplinary creative education). Super successful – cost a fortune – but can be used in various applications seamlessly – and (finally) represents the historically progressive attitude and activities of the institution. Took them YEARS to get to it.

http://www.underconsideration.com/brandnew/archives/i_see_you_c_u.php#.VRYX4933arU

They paid a ton for it – but they paid for a complete “brand” which actually highlights and mirrors their instiutional strengths.