I just finished this online test to determine my leadership related strenghths ...its an xhausting 240 question long test...but i thought it was pretty revealing..... introspective in a wierd self congratulatory sense..

The funda is, that there are 24 main leadership related strengths that various people have in different degrees. The questions evaluate these strengths and give you a bar percentile rating of your level on these traits as compared to others of your age, education,nationality..etc..
One of my lowest strenghts was 'the capacity to love and be loved'..... hmm
in case u are curious about my scores (nosey nosey)

http://www.authentichappiness.sas.upenn.edu/AIESEC/results.aspx?id=310&it=1&viait=1

and in case u wanna do it yourself....

http://www.authentichappiness.sas.upenn.edu/AIESEC/

ciao