There are many! Most medium to high level controllers work great as soundcards too. For example, my DENON DJ MC3000. but there are many many many (many) others! Just to list some, the Traktor S2, Traktor S4, MC3000, MC6000, VCI 400. And thats just to name some. You just have to check the connections the controllwer allows.
For example I used an Hercules mp3 e2 and had to use another soundcard. For controllers with no soundcard included (which are generally much cheaper) you can use the Traktor Audio 2 which is plaing simple, 2 outs, one for master, one for headphones and a usb socket for PC.
If you are interested in any particular controllers and want to know if they have a soundcard just post me the names here and ill be more than glad to help you 🙂
If you want to know yourself, just look for a pic of the backside of the controller and check the connections in there 🙂 To work as a soundcard it should at least have a usb socket for the PC and a master out (if it has that it will probably also have a socket to monitor through headphones)
