Seeing as though you're at university, I think you should get a Wii, as it's a good way to pull girls. If you say to them "Do you wanna come back to my room and play some PS2?" then they'll tell you where to go, but if you ask them "Do you wanna come back to my room and play with my Wii?" then they'll jump at the chance.
Remember, girls aren't gamers... unless they've got the chance to play with a Wii.
***warning*** Don't ask girls who look like they've got some weird fetish if they want to go home to play with your Wii, as they might think you're into watersports instead!