Developers Keith Lee, Brian Morrisroe and Sam Christiansen have received funding for their new start-up, Booyah, that will specialize in apps for the iPhone and iPod touch. The $4.5 million Series A financing is drawn from Kleiner Perkins Caufield & Byers' iFund. The trio of company founders draw previous experience from Blizzard Entertainment, Activision and Insomniac Games.