It's too bad that Emma Clark [1] is no longer the voice of the London Underground [2] (link via Flutterby [3]). Some of her announcements are rather amusing [4].
[1] http://www.b3ta.com/interview/emmaclarke/
[2] http://www.metafilter.com/66883/The-Voice-of-the-Underground-is-silenced
[3] http://www.flutterby.com/archives/comments/10718.html