Directed by Anurag Basu, "Jagga Jasoos" released on Friday after being in the pipeline for over three years.
"Just saw 'Jagga Jasoos' could not resist telling Anurag what a delightful, innovative, well-executed film it was; a joy to watch," Amitabh tweeted.
Besides Amitabh, filmmaker Karan Johar also hailed the film on the micro blogging site.
"I hear 'Jagga Jasoos' is the most unusually treated narrative with heartening performances! Basu is undoubtedly a beautifully chaotic mind," Karan tweeted.
"Word on the street is that Ranbir proves his mettle as a supreme star actor yet again and this is Katrina's best yet! ‘Jagga Jasoos'," he added.
Actress Lisa Ray said that the film deserves a sequel.
"Adored everything about feels good, beautifully shot and acted -- ‘Jagga Jasoos'. This one deserves not only a look but a sequel," she tweeted.