Mumbai, Feb. 10 -- It is hard to imagine, but true, that Sanjay Leela Bhansali's Hum Dil De Chuke Sanam was selected for the Berlin film festival in part thanks to a Mumbai taxi driver. It is an anecdote Dorothee Wenner, Berlin Film Festival delegate for South Asia, loves to recount. She's been visiting India every year for over 20 years....