Oh, now, this is cool. Theres been a thread over at arstechnica asking for a full-screen terminal app for Mac OS X, and the guys at that forum unearthed the uber-geeky terminal app GLTerminal. GLTerminal emulates a 1970s terminal monitor, complete with flaws in brightness, warped display curvature, and flicker. It even simulates baud rate lag. And! for extra verisimilitude, the character colors can be green or amber.
Download it today and play a nice game of chess with Professor Falken. NOTE: Its slightly broken, but the members of that forum have been slowly, slowly fixing the app. In the version linked above, I fixed the key command for full-screen mode (Ive set it to command-return), but to get GLTerminal working correctly, youll still have go to Preferences (under Session?), choose Renderer and then Classic Terminal.