Photoshop

Computer Arts magazine has an excellent tutorial on how to create dynamic distortion effects as seen in this image.

http://www.computerarts.co.uk/tutorials/2d__and__photoshop/create_dynamic_distortion_effects

This tutorial teaches you how to mold paint splatter to a face in photoshop.
Provided by http://psd.tutsplus.com

Fabio Sasso has a great tutorial on creating scorching effects in photoshop.

http://www.digitalartsonline.co.uk/tutorials/index.cfm?FeatureID=1879&pn=1