I’m a big fan of using contextual menus. One of my favorite tools is FruitMenu, the mother of all contextual menu editors. It allows you to totally customize contextual menus and the apple menu in OSX.
There are a few specialized menu plugins that I really like too. QuickImage is one of those…
“Contextual menu plugin that makes it possible to view/edit/print image files without launching any applications. Also it has various other functions like add/remove thumbnail icons, batch rename image files, convert images files to a different format, etc.”
The site says it’s compatible with Jaguar and Panther, but I haven’t had any problem with it under Tiger either. The maker of QuickImage also offers several other useful plugins.