Photoshop is the one of the best tools to create Amazing Forum Signatures and showcase your skills as well. Here is a superb showcase of Photoshop forum signature tutorials for your inspiration. I hope you would find them useful.

Free forum signatures PSD package

The Suffering

Scarlett Signature Tutorial

Thomas Erak Signature Tutorial

Vector Signature Tutorial

Abstract Celeb Sig Tutorial

Spiderman in Heaven

Gorilla Freak Tutorial

Digital Candy Tutorial

New Tutorial

Keira Knightly Tutorial

Kate Moss Signature Tutorial

Flawless Beauty Signature Tutorial

Full Sig Tutorial

Full Signature Tutorial by Senthrax

Smoking Girl Abstract Signature Tutorial