It's much much much better than I was expecting. I'm done with "DJ" or "dancefloor" references, but they are done well here and don't seem quite as generic as the ones I've heard in other songs of the moment.
This will have a lot more mass appeal "Hold It Against Me". Be prepared for Smashney!
Im not surprised though, Britneys bridges are usually better than her choruses and this song is not an exception. The chorus is the worst part. Im done with the ohhhh oohh ohhh sound(omg, blow, etc.) it seems like such filler to me now.