Caricature software?

Hi!
At first I wanna say I´ve tried different programs to make funny caricatures but didn´t really succeeded yet.
Photoshop,Corel and such small free caricatures softwares.
My goal is to create some funny caricatures from the face,body,put some funny effects,make some distortion(similar to PS),put a head on to a funny body,kind of that.
To make funny caricature of somebody for birthday,party,etc.
Is there any good software to do so? Gladly "all-in-one" what can do the job.Any help appreciated.

Sorry I have no sugestions at this time.

I occasionally use Image Cartoonizer (link) to help with vectorization of photos. The trial version, which seems not to be time-limited allows use of six different effects, which may be of some use to you.
Here's an example of a photo I used of Kieran Reid the All Black back row forward.
Bob.

Thanks for all tips.Not exactly what I need,trying different options.