Amazing formation aerobatics in Lock On by russian aerobatics crew VFTC:
http://uk.youtube.com/watch?v=wsAuSm9OXRo
Very cool RC plane stunts:
http://uk.youtube.com/watch?v=Yoy9UZ8ScjA
And some RC helicopter tricks:
http://uk.youtube.com/watch?v=gi7G-VzU2r4