Well I'll start with some of my favourites (with the provision that you probably know them, but someone else might not).
Number 1 fave doggie obviously. On all fours, him behind. Feels dirty, very different to missionary. Nice and deep.
2 on my back, him kneeling, my calves resting on his shoulders, legs pushed back (does that make sense??) You have to be pretty flexible but if feels good and you can have eye contact.
3 CAT collital alignment technique. Very similar to missionary but he's a bit further up on your body and you grind together. Great for clit stimulation.
4 Lifted up facing him (best against a wall). Legs wrapped round his back, rocking slowly together. Won't last for long but has a great sense of urgency to it.
Sorry if you find these boring, but they're my favourites.