Sandra Bullock is great, says George Clooney

Actor George Clooney only has words of praise for his friend and actress Sandra Bullock. He is happy that she has managed to stir up a buzz for an Oscar with her performance in "Gravity".

"Isn't she great," he said here at the AFI Film Festival premiere of "August: Osage County" here recently.

"I've known Sandy (Sandra) for - she doesn't want me to say - over 25 years," he added.

Clooney, 52, who is close to Bullock's three-and-a-half-year-old son Louis, has stood by Bullock since their struggling days. He has seen her through her tough days, including her divorce from husband Jesse James in 2010.

"She's a really dear friend. So watching how this year has gone for her - and she's had tough years before - has been great," he said.