My favorite trick is using DTerm[1] to hybridize graphical and textual interactions. More of a meta-Terminal trick, with a keyboard command it brings up a floating input for terminal entry with some intelligence to the context you initialize it from.
Common uses include starting up Terminal with a command instead of just carte blanche, using a globbed rm to clean a folder I'm viewing in Finder, using ls/grep to find files in a current Finder window, &c. &c.
Common uses include starting up Terminal with a command instead of just carte blanche, using a globbed rm to clean a folder I'm viewing in Finder, using ls/grep to find files in a current Finder window, &c. &c.
[1]http://www.decimus.net/dterm.php