The Dreaded Elliptical

Has anyone ever done the elliptical before? I did it for the first, maybe the second time ever tonight.  My feet went numb! It was the weirdest feeling!  It gave me a pretty good work out though.  I guess it's good for cross training.  In passing, I FINALLY got selected to run in the Canyonlands Half Marathon. WOOOO! Third time's a charm, I guess. :)