Help me finish my beat playlist

[innerslytherin]

My friends really do know everything.  This time I need some music suggestions.

This all started with "Russian Roulette", and that song's the most important part of the playlist.  "Is It You" and "Lady Marmalade" are the others on the list that are closest to what I want.  "Precious" doesn't really belong on there, but I love it.

1. Russian Roulette - Rihanna
   
2. La Tortura (feat. Alejandro Sanz) - Shakira
   
3. Blood of Me - Heather Nova
   
4. Mercy - Duffy
   
5. Oh La La - Goldfrapp
   
6. Is It You - Cassie
   
7. Precious - Esperanza Spalding
   
8. Lady Marmalade - Christina Aguilera, Lil' Kim, Mya & Pink
   
9. Can't Find the Words - Karina
   
10. can'tneverdidnothin' (Explicit) - Nikka Costa
    
11. Case of the Ex - Mya
    

So anything else with a really heavy, compelling (sexy is optional but good) beat?  Not just this general genre of music, but that particular driving, feel it in your chest (or a bit lower *G*) kind of beat.