I just found free NewBlue cartoon effect for Vegas. You'd need to register to get them, but it's free, lol. NewBlueFX | Video plugins and audio effects for Avid Liquid, Avid Media Composer, Adobe Premiere, Adobe After Effects, Apple Final Cut Pro, Apple Motion, Corel VideoStudio, Pinnacle Studio, Sony Vegas, Canopus Edius and other video editors - NewBlueF
Just click on Free FX! on the right and follow the instructions.