Terminal Here - "The Terminal Here plugin (or TerminalHerePlugin or THP) provides a Contextual Menu Module for the Finder in OS X. This CMM provides a popup menu item when right clicking on a directory or file with the option to 'Open Terminal Here'. When used on a file, it acts as if you used it on the directory the file is in."
XDroplets - "A collection of Applescript droplets to launch your X11 programs from the Finder."