yes there is a diesel powered honda accord in europe. since it's europe, it's the TSX body. the engine has been praised as one of the smoothest, most refined diesel engines around. it has set a bunch of records, and has been able to get 76.6 mpg!
http://www.vtec.net/news/news-item?news_item_id=234399

there is some rumor about a diesel engine coming to the US, but honda apparently hasn't been able to meet US regulations with their current diesel technology:
http://www.vtec.net/news/news-item?news_item_id=346349