There are several game references in Bayonetta. The first two are from publisher Sega. After the tutorial level, you can hear Magical Sound Shower playing when Bayonetta is riding in the car. In level 9, Route 666, the music is Final Takeoff! From Outrun and Afterburner respectively.
There are also two from Capcom games. In level 4, Bayonetta exclaims, "Henshin a go-go baby!" The battle cry of Viewtiful Joe. Finally upon entering "The Gates of Hell" the owner says, " What are ya buying? I heard that in a game once." This is a reference to Resident Evil 4.