I have used KT Drum Trigger as a sort of 'toy' for about 8-9 years.

You can 'beatbox' with it, sending 'boom, check, siss' into 3 band pass filters that pass very narrow frequency content (roughly 500, 2000, 4000 Hz) into KT Drum Trigger, that then can send midi note on events to your favorite drum module of choice for kick, snare, closed hi-hat sounds.

I wrote about it in KVRAudio forums a very long time ago, and a guy with real beat box talents took the idea and went nuts with it. http://www.kvraudio.com/forum/printview.php?t=88341&start=0

I also shared it over at the Fender Forums - this thread might have more active .mp3 examples.

It could be a very interesting way to juice existing real drums with additional 'helper' sounds. http://www.fenderforum.com/forum.html?db=&topic_number=493783

I have to be honest that this little experiment with KT Drum Trigger made me fall in love with semi-modular DAW host software. It was the final step that converted me way back about 7-8 years ago. I had alot of fun with this just experimenting with it.