1. Phoolan Devi it is.
cracked by Ram, Ashok, Sourabh, Shiva, Sundaram and Sticky
2. The Google homepage in Klingon.
cracked by Ashok, Sticky, 2D and Shtud. part points to Sourabh
3. Osibisa, which came to Coimbatore as part of The Hindu's November Fest.
Ashok, 2D and Shiva get it.
4. Who else but Rohan Bopanna and Aisam-ul-haq Qureshi, the Indo-Pak Express, for their message "Stop War, Start Tennis".
cracked by Sticky, Sundaram and Ashok.