The easiest program I was told about was Comic Life for Macs (http://plasq.com/comiclife), but Apple’s Photobooth was also mentioned (although I didn’t try it). I also was given a link to a how to for Photoshop (http://www.melissaclifton.com/tutorial-popart.html) which looks like it is much higher quality than Comic Life but also much more work.
Comic Life let’s you use image filters to make the image look comic-y, but it doesn’t work well with all images. It does let you put in speech bubbles and stuff, though, and it looks pretty good.
Tags: art, image processing