Filmmaker James Longley, whose much-lauded work includes the Oscar-nominated docs Iraq in Fragments and Sari's Mother, has been filming his next documentary in Iran on and off over the past two years--including the ongoing turmoil in the wake of the hotly contested Presidential election.
Here's an account of his translator's recent detainment by Iranian authorities, which he posted to Doug Block's blog, Around the Block. Longley's translator has since been released.
And here's a more recent series of updates, assembled by AJ Schnack.