http://sonicfaction.com/products/ableton/tricky-traps/

Been playing with this for the last week and I love it.
Its a very hands on experience with Push 1 Push 2 and Launchpad Pro Mk2, although you don't need push but it's useful.
I've been using it to generate interesting patterns and chord progressions, I know there are a lots of other m4l devices that kind of do the same thing but the execution, functionality and presentation is just superb.

 

@Ultram Presentation looks really interesting
May be after heaving fun one week more, you give us a chance to have that fun too, by making post on sistersite