Nirvana through the release of the first Foo Fighters album.The interview airs on Saturday (July 4), exactly 25 years after the Foo Fighters' debut, self-titled album arrived (on July 4, 1995).Grohl admitted that when he joined Nirvana and they became "really huge really quickly," he was still insecure that he wasn't quite good enough for the band."Well I mean I joined Nirvana, I was their fifth drummer, right?" he said.