What are the best songs to dance too?

We are having a birthday party tonight for my buddy, he is 18. And of course we are having a dance portion of the night, haha. What songs will be good? They can be from the 2000s or the 1990s. Songs like; In Da Club by 50 cent, Back That *** Up by Juvenille, Right Round by Flo Rida. Songs like that, thanks! :)