Katie Melua in her song Nine Million Bicycles had a bit of bad science in the second verse:

We are 12 billion light-years from the edge,
That's a guess, no one can ever say it's true,
But I know that I will always be with you

Anyway, after a tongue-in-cheek article appeared in the Guardian about this she did another cut with some more accurate lyrics:

We are 13.7 billion light-years from the edge of the observable universe,
That's a good estimate with well-defined error bars,
And with the available information, I predict that I will always be with you

Here's Michael Shermer featuring it in one of his talks.

Much better. :D