Ferrell tours with unknowns to promote film

Movie star Will Ferrell is taking three up-and-coming comics on a seven-date US tour to promote his upcoming movie 'Semi-Pro'.

Ferrell will headline the February arena shows, which will also feature funnymen Zach Galifianakis, Demetri Martin and Nick Swardson.

The road show is sponsored by Ferrell's FunnyOrDie.com website and kicks off in Kansas City, Kansas on 4 February.