Party Showcase Game Suggestions?

[Spaced Invader]

After a long absence I'm back to building...

This time I've decided to do something a little different. What I have in mind is a showcase cab set up for party type games. It will be PC based (Windows XP with a decent CPU and graphics card). Controllers include GH Guitars (PS2 or 360) to use with "Frets on Fire" (Guitar Hero clone), PS2 Buzz! controller for some "You Don't Know Jack goodness", and a mic or two to use with "Ultrastar" (Singstar clone).

So, my question is...

What am I missing? I'm looking for any game or controller suggestions that would compliment or improve on my "Party Machine" concept...female friendly is a bonus. Entertaining my buddies is easy...but making it fun for the girls is what makes a party a party. 

Thanks for reading this...any advice you can give is appreciated.