A double bill of cgi chipmunk madness alvin and the chipmunks 2007 is a live action big screen outing for everyones favourite chipmunks alvin simon and theodore discovered and adopted by struggling songwriter dave seville jason lee the dynamic trio decide to join forces and embark on a singing career performing daves songs when success beckons however unscrupulous record company boss ian hawke david cross decides that he could make a lot more money from the boys if dave was o