Actor Ranveer Singh is going gaga over the "magical performances" by megastar Amitabh Bachchan, Irrfan and his rumoured ladylove Deepika Padukone in "Piku". He says it39s Deepika39s best performance so far."Pure magic in th performances by @SrBachchan @irrfan_k a career-best display from @deepikapadukone..Bravo!! And no, I39m not being biased," the actor posted on his Twitter page.Further, he is amazed at the sheer quality of the film and has found it endearing."PIKU...Absolutely marvelous!!! @ShoojitSircar @writeonj take a bow! RIP-ROARING ! heart-warming, endearing poignant...sheer quality!," he tweeted.Meanwhile, when Deepika was asked about her reaction to Ranveer39s tweet at an event recently, she laughed and said: "I think I take it in the same way as hundred other people have tweeted it, so you should ask me about those also.""Piku", directed by Shoojit Sircar, is a story of heart-warming relationship of a father and a daughter.