Ah, I wasn't sure what a tornado kick was, but yes, I have seen them. RazorFoot used to do them fairly often.

http://www.youtube.com/user/skeen267#p/u/31/g-Ecnv6Uz0M

Taison is right that aerial kicks are a crap-shoot, though. You give up your balance, but you can get big power if you land one:

http://www.youtube.com/user/skeen267#p/u/6/eJ2QEIJT5ko
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"In case you ever wondered what it's like to be knocked out, it's like waking up from a nightmare only to discover it wasn't a dream." -Forrest Griffin