This article is interesting. This section amuses me:
One scholar at the Notre Dame conference, who uses the pseudonym Christoph Luxenberg for safety, has raised eyebrows and hackles by suggesting that the “houri” promised to martyrs when they reach Heaven doesn’t actually mean “virgin” after all. He argues that instead it means “grapes,” and since conceptions of paradise involved bounteous fruit, that might make sense. But suicide bombers presumably would be in for a disappointment if they reached the pearly gates and were presented 72 grapes.