Those of us who have been lucky enough to see the Britney Spears Circus tour in person can't forget the sublimely sexy "Sweet Dreams" video that plays on the giant screens during the "Freakshow" section of the ringleader's performance.

Here's a video shot at one of Britney's concerts, featuring the singer in various stages of ... well, see for yourself ... as Marilyn Manson's hit "Sweet Dreams" echoes through the arena. All part of this family-friendly tour, ladies and gents:

Britney Spears: Sweet Dreams

Britney Spears channels her inner Marilyn Manson. We are slightly afraid.

We just hope K-Fed is playing with Sean Preston and Jayden James elsewhere rather than sitting front row during this. As if they aren't scarred for life as it is.

She sure can put on a show, though, as she says. For more images from Britney's recent concert in Oakland, click to enlarge the awesome pictures below ...