We're obliged to Michael Moran over at the Times for alerting us to a good piece of work by Ain’t It Cool who spotted this provocative movie poster in the background of Will Smith vehicle I am Legend:

The release date for the film is apparently 15 May 2010, although despite fanboy speculation that the image might be a viral marketing play for a long-awaited Gotham-Metropolis hook-up, Moran reckons it's "just a sight gag from producer Akiva Goldsman who was at one involved in the Superman/Batman movie project which has been stuck in development hell for some years now".

Moran notes: "Rumours of a Batman/Superman movie have been at their strongest since the recent rejuvenation of the two movie franchises but neither Christian Bale nor Brandon Routh are currently attached to the project." ®