Here you go, not sure how high though, dont know how you measure it :

Owned

i think nokturnal's high jump 2 was higher than both but i'll get some one to check

Since you can't measure height, I think the best you can do is measure how long you stay in the air. Nokturnal's high jump is 377 frames.

Its easy to measure height.... Simply, Press i to enter debug mode, and have the mouse over the head of your player. Then look for: Head Pos, and take the last number wich tells about height.

Edit; B-rad's where about 9 meters. Adteminals where only 7 meters.

This one is a wee bit higher

Im not sure which of these is the highest but my feet go to 14.44 meters in one of these.

any body else have any submissions?

sure, just did this, not too shabby in my eyes...

Here's mine.