Meanwhile Foo Fighters star Dave Grohl will debut his first venture behind the camera.

BBC: Ashton Kutcher as Steve Jobs

Green Day, Dave Grohl, Vampire Weekend, the Yeah Yeah Yeahs and Natalie Maines of the Dixie Chicks also starred at SXSW this week.

NPR: Prince Delivers Funk-Filled Finale At SXSW

Back in the main arena, I went hunting for Dave Grohl.

BBC: Kerrang! awards

Dave Grohl has parlayed his drummer gig for one of the most influential rock bands of the last quarter-century (that's Nirvana, in case you forgot) into the front man role with perennial Grammy winner Foo Fighters and is now a sort of de facto spokesman for the world of rock.

CNN: What to watch for at South by Southwest