Heh, this is an amusing thread...
As stated in other posts, it is not possible to pass the cervix, or enter the uterus, etc. Also, cervical tenting NOT a function allowing entry to, or the bypassing of the cervix (although it is a function that facilitates the movement of fluids THROUGH the cervix). Although the cervix, uterus, and tenting all play a part...
However, aside from the clitoris, G-spot, and the U-spot (commonly understood as simply the opening of the urethra, but perhaps more specifically, a portion of skin immediately around the urethral opening, in the shape of an upside-down U), finally there is the A-spot (also called the X-spot, deep spot, Epicenter, T-Zone, AFE-Zone (for Anterior Fornix Erogenous Zone), cavity of the cervix, female degenerated prostate, etc.). Note: The Posterior Fornix would be the space between the cervix and the posterior wall of the vagina, the only space that is accessible "past" the cervix.
Now, first of all, while it is not possible to penetrate the uterus during vaginal intercourse, it is possible for sexual stimulation to occur due to the interaction between the uterus and the peritoneal lining, due to motion translated through the cervix (although direct contact with the cervix is not required for this to occur). Some find it pleasurable, other painful.
Now, the cervix itself is not very sensitive, but the region immediately before it is the portion of the anterior vaginal wall that is direction behind the trigone of the urinary bladder (this is the area where semen pools, that the tip of the cervix "tents" towards, to facilitate the uptake of sperm), and in-between this "spot" and the trigone is Halban's Fascia, which is the point in question that we are referring to as the A-Spot.
Female orgasm is a complex thing, involving at least three nervous pathways through the spinal cord, and most likely a fourth, by way of a direct cranial nerve. Add to that route of sensory information the fact that some women are capable of experiencing thought-induced orgasms, absent of any external stimulation at all (either by erotic thought, pastoral thought, or even abstract thought patterns)... It's a complex subject.
But I'm gay, so I'll leave the exploration of that subject to other men (and women).
Oh, and on the not-so-amusing subject of deep penetration triggering clitoral numbness from the beginning of the thread (and the other report of hip and leg numbness), I was curious, as I've never heard of symptoms like that, and even after some through searching, I was unable to find any discussion of those or similar symptoms being triggered by stimulation to a specific region of the vagina. The only condition that seems remotely connected would be uterine fibroids, which normally do not have major symptoms, but some of those that do occur are related to arterial pressure caused by the growth of benign tumors in the uterus, so it seems possible that a symptom (such as numbness) could potentially be triggered by deep vaginal penetration causing unusual stimulation to that region. I'd probably not a dangerous condition, but it is possible that you might be suffering from other, seemingly unrelated symptoms, so you might want to read up on the condition.