With XnSketch (32-bit), you can easily turn your photos into cartoon or sketch images. It features 18 different effects such us black strokes, white strokes, pastel, pencil sketch, and colored sketch, edge strength and opacity adjustment, and Contrast, brightness, and saturation adjustments. The results can shares on Flickr, Facebook, and Twitter or save to photo album, or send by email.
I've used many of these types of programs and this is one of the best along with their other one XNRetro (which gives kind of Instagram effects). It's simple to use, all effects are well executed and although I normally use the well known and expensive Photoshop sometimes simple is best.
Cons
None that I can think of.
Summary
I've made some really lovely pictures from family photographs which I then had printed on to canvas and they look great. I know what I'll be getting everyone for Christmas. I'm going to try some more of the XNView addons (although this is standalone) as the two I've tried have been so good.