Signature images without animation are bad enough. I block them all, as a rule.
Can we block sig images again?! I’m off to do that if it’s possible again…
JEDIT: Looks like it’s not possible. Bluh.
Browser add-on (Adblock Plus with Element Hider). You can block all kinds of things, including skyscraper bunnies and Random Pictures posted by DuracellEnergizer ;)