Apologies for the delay, once again :)
1. Hogenakkal Falls (from Kannada Hoge and Kal)
cracked by Ashok and Senthil.
2. HG Wells and Orson Welles, before the latter's radio screening of War of the Worlds.
good answer by Sundaram.
3. Unfortunately nobody got it :(
Champagne and Brandy
Popsicle and Ice cream cone
Cornflakes and Chocolate chip cookies
Connect: (lesser known) Accidental inventions.