Thanks to the tip from Filmiholic about Saavn Mobile, my cell phone now rings to Dil Chahta Hai's "Koi Kahe Kehta Rahe." Akshaye just rolls his eyes affectionately, although entre nous, when I first got it and made him call my phone from his phone, just so he could hear it, he smiled. He thinks I don't see him dancing along to it when he's in the other room, but I do. He's so cute.
Update to post (February 20, 2007): I should mention my brief but fascinating history with filmy ringtones. When I was in India this summer, the phone I rentend had a bunch of ringtones on it already, some of which were disappointingly identical to ones heard in the US but others of which were exactly what I would have wanted, namely "Kajra Re" (as though played on the phone keys, not an actual clip of the song, which is what my current "Koi Kahe" clip is). So of course that's what I used. I wouldn't be surprised to learn that my whole group was tired of the song by the time our five weeks were up. Our much-loved tour manager, Rajan, had his phone set to that whistling song from Fanaa, and I was definitely ready not to hear that anymore. On my penultimate night in India, I was at a market in Delhi and I heard that ring, and I whipped around, expecting to see Rajan. Because clearly no one else in a country of over a billion people would have same ringtone.